SPECIAL OCCUPANCIES

Municipal Code of Chicago tit. 14E, ch. 14E-5

in effect

Municipal Code of Chicago § 14E-5-500 Hazardous (classified) locations, classes I, II, and III, divisions 1 and 2.

14E-5-500 Hazardous (classified) locations, classes I, II, and III, divisions 1 and 2. The provisions of Article 500 of NFPA 70 are adopted by reference without modification.

Municipal Code of Chicago § 14E-5-501 Class I locations.

14E-5-501 Class I locations. The provisions of Article 501 of NFPA 70 are adopted by reference with the following modifications: 1. Revise subsections 501.10(A)(1) and (A)(2) to read: "(1) General. In Class I, Division 1 locations, the wiring methods in (a) through (c) shall be permitted. (a) Threaded rigid metal conduit or threaded steel intermediate metal conduit. (b) Type MI cable terminated with fittings listed for the location. Type MI cable shall be installed and supported in a manner to avoid tensile stress at the termination fittings. (c) Optical fiber cable Types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN and OFC shall be permitted to be installed in raceways in accordance with 501.10(A). These optical fiber cables shall be sealed in accordance with 501.15. Exception: Type PVC conduit, Type RTRC conduit, and Type HDPE conduit shall be permitted where encased in a concrete envelope a minimum of 50 mm (2 in.) thick and provided with not less than 600 mm (24 in.) of cover measured from the top of the conduit to grade. The concrete encasement shall be permitted to be omitted where subject to the provisions of 514.8, Exception No. 2, or 515.8(A). Threaded rigid metal conduit or threaded steel intermediate metal conduit shall be used for the last 600 mm (24 in.) of the underground run to emergence or to the point of connection to the aboveground raceway. An equipment grounding conductor shall be included to provide for electrical continuity of the raceway system and for grounding of non-current-carrying metal parts. (2) Flexible Connections. Where necessary to employ flexible connections, as at motor terminals, one of the following shall be permitted: (1) Flexible fittings listed for the locations (2) Flexible cord in accordance with the provisions of 501.140, terminated with cord connectors listed for the location." 2. Revise subsections 501.10(B)(1) and (B)(2) to read: "(1) General. In Class I, Division 2 locations, the following wiring methods shall be permitted: (1) All wiring methods permitted in 501.10(A). (2) Enclosed gasketed busways and enclosed gasketed wireways. (3) Type PLTC and Type PLTC-ER cable in accordance with the provisions of Article 725. The cable shall be terminated with listed fittings. (4) Type MV and the cable shall be terminated with listed fittings. (5) Optical fiber cable Types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC shall be permitted to be installed in any raceway in accordance with 501.10(B). Optical fiber cables shall be sealed in accordance with 501.15. (2) Flexible Connections. Where provision must be made for limited flexibility, one or more of the following shall be permitted: (1) Listed flexible metal fittings. (2) Flexible metal conduit with listed fittings. (3) Liquidtight flexible metal conduit with listed fittings. (4) Flexible cord listed for extra-hard usage and terminated with listed fittings. A conductor for use as an equipment grounding conductor shall be included in the flexible cord. (5) For elevator use, an identified elevator cable of Type EO, ETP, or ETT, shown under the "use" column in Table 400.4 for "hazardous (classified) locations" and terminated with listed fittings. Informational Note: See 501.30(B) for grounding requirements where flexible conduit is used." (Amend Coun. J. 10-7-20, p. 21791, Art. III, § 4)

Municipal Code of Chicago § 14E-5-502 Class II locations.

14E-5-502 Class II locations. The provisions of Article 502 of NFPA 70 are adopted by reference with the following modifications: 1. Revise subsections 502.10(A)(1) and (A)(2) to read: "(1) General. In Class II, Division 1 locations, the wiring methods in (1) through (4) shall be permitted: (1) Threaded rigid metal conduit, or threaded steel intermediate metal conduit. (2) Type MI cable with termination fittings listed for the location. Type MI cable shall be installed and supported in a manner to avoid tensile stress at the termination fittings. (3) Optical fiber cable Types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC shall be permitted to be installed in raceways in accordance with 502.10(A). Optical fiber cables shall be sealed in accordance with 502.15. (2) Flexible Connections. Where necessary to employ flexible connections, one or more of the following shall also be permitted: (1) Dust-tight flexible connectors. (2) Liquidtight flexible metal conduit with listed fittings. (3) Interlocked armor Type MC cable having an overall jacket of suitable polymeric material and provided with termination fittings listed for Class II, Division 1 locations. (4) Flexible cord listed for extra-hard usage and terminated with listed dust-tight fittings. Where flexible cords are used, they shall comply with 502.140. Informational Note: See 502.30(B) for grounding requirements where flexible conduit is used." 2. Revise subsections 502.10(B)(1) and (B)(2) to read: "(1) General. In Class II, Division 2 locations, the following wiring methods shall be permitted: (1) All wiring methods permitted in 502.10(A). (2) Rigid metal conduit, intermediate metal conduit, electrical metallic tubing, dust-tight wireways. (3) Type MI cable with listed termination fittings. (4) Type PLTC and Type PLTC-ER cable in accordance with the provisions of Article 725, including installation in cable tray systems. The cable shall be terminated with listed fittings. (5) Type ITC and Type ITC-ER cable as permitted in 727.4 and terminated with listed fittings. (6) Type MI, MV, TC, or TC-ER cable installed in ladder, ventilated trough, or ventilated channel cable trays in a single layer, with a space not less than the larger cable diameter between the two adjacent cables, shall be the wiring method employed. (7) Optical fiber cable Types OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC shall be permitted to be installed in cable trays or any other raceways in accordance with 502.10(A). Optical fiber cables shall be sealed in accordance with 502.15 (2) Flexible Connections. Where provision must be made for flexibility, 502.10(A)(2) shall apply."

Municipal Code of Chicago § 14E-5-503 Class III locations.

14E-5-503 Class III locations. The provisions of Article 503 of NFPA 70 are adopted by reference with the following modifications: 1. Revise subsections 503.10 (A)(1) to (A)(3) to read: "(1) General. In Class III, Division 1 locations, the wiring method shall be in accordance with (1) through (4): (1) Rigid metal conduit, Type RTRC conduit, intermediate metal conduit, electrical metallic tubing, dust- tight wireways, or Type MI cable with listed termination fittings. (2) Type PLTC and Type PLTC-ER cable in accordance with the provisions of Article 725 including installation in cable tray systems. The cable shall be terminated with listed fittings. (3) Type ITC and Type ITC-ER cable as permitted in 727.4 and terminated with listed fittings. (2) Boxes and Fittings. All boxes and fittings shall be dust-tight. (3) Flexible Connections. Where necessary to employ flexible connections, one or more of the following shall be permitted: (1) Dust-tight flexible connectors (2) Liquidtight flexible metal conduit with listed fittings, (3) Interlocked armor Type MC cable having an overall jacket of suitable polymeric material and installed with listed dust-tight termination fittings (4) Flexible cord in compliance with 503.140 Informational Note: See 503.30(B) for grounding requirements where flexible conduit is used. (5) For elevator use, an identified elevator cable of Type EO, ETP, or ETT, shown under the "use" column in Table 400.4 for "hazardous (classified) locations" and terminated with listed dust-tight fittings." 2. Revise subsection 503.10(B) to read: "Class III, Division 2. In Class III, Division 2 locations, the wiring method shall comply with 503.10(A)."

Municipal Code of Chicago § 14E-5-504 Intrinsically safe systems.

14E-5-504 Intrinsically safe systems. The provisions of Article 504 of NFPA 70 are adopted by reference without modification.

Municipal Code of Chicago § 14E-5-505 Zone 0, 1, and 2 locations.

14E-5-505 Zone 0, 1, and 2 locations. The provisions of Article 505 of NFPA 70 are adopted by reference without modification.

Municipal Code of Chicago § 14E-5-506 Zone 20, 21, and 22 locations for combustible dusts or ignitable fibers/flyings,

14E-5-506 Zone 20, 21, and 22 locations for combustible dusts or ignitable fibers/flyings, The provisions of Article 506 of NFPA 70 are adopted by reference with the following modifications. 1. Revise subsection 506.15(A) by deleting items (3) and (4). 2. Revise subsection 506.15(C) item (3) to read: "Type MI cable with listed termination fittings." 3. Revise subsection 506.15(C) by deleting items (4), (5), and (6).

Municipal Code of Chicago § 14E-5-510 Hazardous (classified) locations - Specific.

14E-5-510 Hazardous (classified) locations - Specific. The provisions of Article 510 of NFPA 70 are adopted by reference without modification.

Municipal Code of Chicago § 14E-5-511 Commercial garages, repair and storage.

14E-5-511 Commercial garages, repair and storage. The provisions of Article 511 of NFPA 70 are adopted by reference with the following modifications: 1. Revise subsection 511.7(A)(1) to read: "Fixed Wiring Above Class I Locations. All fixed wiring above Class I locations shall be in metal raceways, flexible metal conduit, liquidtight flexible metal conduit, or shall be Type MI, or PLTC cable in accordance with Article 725, or Type TC cable or Type ITC cable in accordance with Article 727." (Amend Coun. J. 10-7-20, p. 21791, Art. III, § 5)

Municipal Code of Chicago § 14E-5-513 Aircraft hangars.

14E-5-513 Aircraft hangars. The provisions of Article 513 of NFPA 70 are adopted by reference with the following modification: 1. Revise subsection 513.7(A) to read: "Fixed Wiring. All fixed wiring in a hangar but not installed in a Class I location as classified in 513.3 shall be installed in metal raceways or shall be Type MI cable."

Municipal Code of Chicago § 14E-5-514 Motor fuel dispensing facilities.

14E-5-514 Motor fuel dispensing facilities. The provisions of Article 514 of NFPA 70 are adopted by reference without modification. (Amend Coun. J. 10-7-20, p. 21791, Art. III, § 6)

Municipal Code of Chicago § 14E-5-515 Bulk storage plants.

14E-5-515 Bulk storage plants. The provisions of Article 515 of NFPA 70 are adopted by reference with the following modifications: 1. Revise subsection 515.7(A) to read: "Fixed Wiring. All fixed wiring above Class I locations shall be in metal raceways, or Type MI, Type TC, or Type PLTC and Type PLTC-ER cable in accordance with the provisions of Article 725, or Type ITC and Type ITC-ER cable as permitted in 727.4. The cable shall be terminated with listed fittings." 2. [Reserved.] 3. Delete subsection 515.8(C). (Amend Coun. J. 10-7-20, p. 21791, Art. III, § 7)

Municipal Code of Chicago § 14E-5-516 Spray application, dipping, coating, and printing processes using flammable or combustible materials.

14E-5-516 Spray application, dipping, coating, and printing processes using flammable or combustible materials. The provisions of Article 516 of NFPA 70 are adopted by reference with the following modifications: 1. Revise subsection 516.7(A) to read: "Wiring. All fixed wiring above the Class I and II locations shall be in metal raceways; where cables are used, they shall be Type MI or Type TC. Cellular metal floor raceways shall only be permitted to supply ceiling outlets or as extensions to the area below the floor of a Class I or II location. Where cellular metal floor raceways are used, they shall not have connections leading into or passing through the Class I or II location unless suitable seals are provided." 2. Revise subsection 516.38(A) to read: "Wiring. All fixed wiring above the Class I and II locations shall be in metal raceways; where cables are used, they shall be Type MI or Type TC cable. Cellular metal floor raceways shall only be permitted to supply ceiling outlets or as extensions to the area below the floor of a Class I or II location. Where cellular metal raceways are used, they shall not have connections leading into or passing through the Class I or II location unless suitable seals are provided."

Municipal Code of Chicago § 14E-5-517 Health care facilities.

14E-5-517 Health care facilities. The provisions of Article 517 of NFPA 70 are adopted by reference with the following modifications: 1. Insert the following language in section 517.2 after the definition of "Anesthetizing Location": "Auxiliary Source. An additional utility service intended to provide a reliable source of power in the event of disruption of the normal service." 2. Revise the definition of "Battery-Powered Lighting Units" in section 517.2 to read: "Individual unit equipment for required standby emergency illumination shall consist of the following: (1) Rechargeable acid or alkali storage battery designed and constructed to meet the requirements of emergency service of suitable rating and capacity to supply and maintain not less than 87-1/2 percent of the nominal battery voltage for the total lamp load associated with the unit for a period of at least 90 minutes (2) Battery-charging means (3) Provisions for one or more lamps mounted on the equipment, or with terminals for remote lamps, or both (4) Relaying device arranged to energize the lamps automatically upon failure of the supply to the unit equipment (5) Unit battery housing and lamp housing shall be made of metal All unit battery equipment shall be listed and labeled as emergency lighting equipment." 3. Revise the definition of "Critical Branch" in section 517.2 to read: "A subsystem of the emergency system consisting of feeders and branch circuits supplying power for task illumination, fixed equipment, selected receptacles, and select power circuits serving areas and functions related to patient care that are automatically connected to alternate power sources by one or more transfer switches during interruption of normal power source." 4. Insert the following language in section 517.2 after the definition of "Electrical Life Support Equipment": "Emergency System. A system of feeders and branch circuits meeting the requirements of Article 700, except as modified by Article 517, and intended to supply alternate power to a limited number of prescribed functions vital to the protection of life and patient safety, with automatic restoration of electrical power within 10 seconds of power interruption." 5. Insert the following language in section 517.2 after the definition of "Equipment branch": "Equipotential Grounding System. A grounding system in which all exposed conductive surfaces are connected to a common grounding point by approved conductors to insure that all surfaces are at the same potential." 6. Insert the following language in section 517.2 after the definition of "Fault Hazard Current": "Final Reserve Power Source. One or more generator sets, or battery systems, where permitted, to provide power during interruption of the normal and auxiliary electrical services." 7. Revise the definition of "Life Safety Branch" in section 517.2 to read: "A subsystem of the emergency system consisting of feeders and branch circuits, meeting the requirements of Article 700 and intended to provide adequate power needs to ensure safety to patients and personnel, and that is automatically connected to alternate power sources by two or more transfer switches during interruption of the normal power source." 8. Revise the definition of "Reference Grounding Point" in section 517.2 to read: "A ground terminal or group of terminals which serve as a collection point for grounding exposed metal of conductive building surfaces in a patient care room." 9. Revise the definition of "Selected Receptacles" in section 517.2 to read: "A minimum number of electrical receptacles to accommodate appliances ordinarily required for local tasks or likely to be used in patient care emergencies. Selected receptacles shall be identified by means of permanent red coloring and be hospital grade receptacles which are fed from a branch circuit connected on the critical branch." 10. Revise the definition of "Task Illumination" in section 517.2 to read: "Provisions for the minimum lighting required to carry out necessary tasks in the described areas, including safe access to supplies and equipment. Task illumination branch circuit shall be fed from critical branch." 11. Revise section 517.13 to read: "Grounding of Receptacles and Fixed Electrical Equipment in Patient Care Spaces. Wiring in patient care spaces shall comply with 517.13(A) and (B). (A) Wiring Methods. All branch circuits serving patient care spaces shall be provided with an effective ground-fault current path by installation in a metal raceway system. The metal raceway system shall itself qualify as an equipment grounding conductor in accordance with 250.118. (B) Insulated Equipment Grounding Conductors and Insulated Equipment Bonding Jumpers. (1) General. The following shall be directly connected to an insulated copper equipment grounding conductor that is clearly identified along its entire length by green insulation and installed with the branch circuit conductors in the wiring methods as provided in 517.13(A). (1) The grounding terminals of all receptacles other than isolated ground receptacles. (2) Metal outlet boxes, metal device boxes, or metal enclosures containing receptacles. (3) All non-current-carrying conductive surfaces of fixed electrical equipment likely to become energized that are subject to personal contact, operating at over 100 volts. Exception No. 1: For other than isolated ground receptacles, an insulated equipment bonding jumper that directly connects to the equipment grounding conductor is permitted to connect the box and receptacle(s) to the equipment grounding conductor. Isolated ground receptacles shall be connected in accordance with 517.16. Exception No. 2: Metal faceplates shall be permitted to be connected to the equipment grounding conductor by means of a metal mounting screw(s) securing the faceplate to a grounded outlet box or grounded wiring device. Exception No. 3: Luminaires more than 2.29 m (7.5 ft) above the floor and switches located outside of the patient care vicinity shall be permitted to be connected to an equipment grounding return path complying with 517.13(A) or (B). (2) Sizing. Equipment grounding conductors and equipment bonding jumpers shall be sized in accordance with 250.122." 12. Revise section 517.14 to read: "Panelboard Bonding. The equipment grounding terminal buses of the normal and essential branch-circuit panelboards serving the same individual patient care vicinity shall be connected together with an insulated continuous copper conductor not smaller than 6 AWG. Where two or more panelboards serving the same individual patient care vicinity are served from separate transfer switches on the emergency system, the equipment grounding terminal buses of those panelboards shall be connected together with an insulated continuous copper conductor not smaller than 6 AWG. This conductor shall be permitted to be broken in order to terminate on the equipment grounding terminal bus in each panelboard." 13. Revise section 517.16 to read: "Receptacles with Isolated Grounding Terminals. Receptacles with isolated grounding terminals, as described in 250.146(D), shall be identified by color coding the receptacle orange and shall not be used within patient care space." 14. Revise the first paragraph of subsection 517.18(A) to read: "Patient Bed Location. Each patient bed location shall be supplied by at least two branch circuits, one from the emergency system critical branch and one from the normal system. All branch circuits from the normal system shall originate in the same panelboard. The electrical receptacles supplied from the critical branch shall be identified by means of permanent red coloring and shall also indicate the panelboard and branch-circuit number supplying them. Branch circuits serving patient bed locations shall not be part of a multi-wire branch circuit." 15. Revise subsection 517.19(D) to read: "Patient Care Vicinity Grounding and Bonding. All critical care (Category 1) space shall have an equipotential grounding system. An equipotential grounding system shall consist of grounding and bonding conductors connected to ground bars and arranged to maintain voltage potential differences at a safe level in the patients’ vicinity between all conductive surfaces, all conductive non-electrical equipment and devices and all non-current carrying metal parts of electrical equipment and devices. (1) Bonding and Grounding Conductors. All bonding and grounding conductors shall be green insulated, stranded copper, installed in metal raceways in continuous length, without splice from, ground bar to ground bar. The minimum size of the grounding and bonding conductor shall be as follows: (a) From source of power (main electrical service or transformer) to the distribution panelboards or panels serving the branch circuit panelboards in the areas required to have equipotential grounding shall be sized in accordance with 250.122 with a minimum size of 6 AWG. (b) From the distribution panelboard to the branch circuit panelboard and to the patients’ panelboard, when used, shall be sized in accordance with 250.122 with minimum size of 6 AWG. (c) To the room, reference or patient ground buses or between these the minimum size shall be 6 AWG. (d) To non-electric conductive surfaces and ground jacks shall be 10 AWG (e) To receptacles, light switch boxes, and luminaires shall be 12 AWG. (f) To additional ground jack devices shall be 10 AWG. (g) Between panelboards supplying the same patient shall be 6 AWG. (h) Grounding electrical cordage shall be 10AWG extra-flex. (i) All metal raceways in the aforementioned spaces containing electrical wiring shall have at least one equipment grounding conductor sized to Table 250.122. (j) Each distribution panelboard and branch circuit panelboard supplying power to an area that requires potential grounding shall contain and equipotential ground bar. All ground bars shall be bonded to the enclosure in approved manner. All grounding bars shall be made of copper, not less than 1/4 in. thick, drilled and tapped for 1/4 in. x 20 machine screw and sized large enough to accommodate all the conductors to be connected plus spares. Each conductor shall be connected by a separate 1/4 in. x 20 hexhead, non-slotted machine screw. All connections shall be torqued in accordance with 110.14(D). (2) Critical Care (Category 1) Bed Location. Each critical care (Category 1) bed location shall have equipment grounding point grounded by means of an insulated continuous copper conductor, sized not smaller 6 AWG installed directly to the reference grounding point or to an equipment grounding bus of the panelboard serving the critical care (Category 1) patient. The patient equipment grounding point shall contain a minimum of 4 listed ground jacks and additional listed ground jacks shall be installed as required. (3) Fixed Exposed Conducive Surfaces. Fixed exposed conductive surfaces in the critical care (Category 1) vicinity shall be connected to the critical care bonding point(s) or reference grounding point by a continuous 10 AWG copper conductor. Exception: Small wall-sized conductive surfaces such as surface-mounted towel and soap dispensers, mirrors, and so forth shall not be required to be grounded. In addition, bedside stands, over-bed tables, chairs, portable IV poles, and small, portable non-electrical devices such as trays, pitchers, bedpans and the like, shall not be required to be grounded. (4) Single Point. Any other grounding and bonding points in 517.19(D)(2) and (D)(3) shall be permitted to be combined into a single point." 16. Revise section 517.25 by deleting the informational note. 17. Revise section 517.29 to read: "Essential Electrical Systems for Hospitals. (A) Applicability. The requirements of Part III, 517.29 through 517.35, shall apply to hospitals where an essential electrical system is required. Health care facilities other than hospitals with critical care (category 1) spaces shall also comply with these requirements. (B) General. (1) Scope. Essential electrical systems for hospitals shall be comprised of two separate systems capable of supplying a limited amount of lighting and power service, which is considered essential for life safety and effective hospital operation during the time the normal electrical service is interrupted for any reason. These two systems shall be the emergency system and the equipment system. (2) Emergency System. The emergency system shall be limited to circuits essential to life safety and critical patient care. These are designated the life safety branch and the critical branch. (3) Equipment System. The equipment system shall supply major electric equipment necessary for patient care and basic hospital operation. (4) Transfer Switches. The number of transfer switches to be used shall be based upon design and load considerations. Each branch of the essential electrical system shall be served by one or more transfer switches as shown in Figures 517.29(B)(4)(a). With special permission, facilities with a maximum demand on the essential electrical system of 150 kVA will be permitted to have one transfer switch serving the emergency branches as in Figure 517.29(B)(4)(b). (5) Other Loads. Loads served by the generating equipment not specifically named in 517.33 and 517.34 shall be served by their own transfer switches such that these loads: (1) Shall not be transferred if the transfer will overload the generating equipment (2) Shall be automatically shed upon generating equipment overloading. (6) Power Source. Hospital power sources and alternate power sources shall be permitted to serve the essential systems of contiguous or same site facilities. (C) Wiring Requirements. (1) Separation from Other Circuits. The life safety branch and critical branch of the emergency system shall be kept entirely independent of all other wiring and equipment and shall not enter the same raceways, boxes, or cabinets with each other or other wiring. Exception: Service switchboard and transfer switch equipment. (2) Isolated Power Systems. Where isolated power systems are installed in any of the areas in 517.33(A)(1) and (A)(2), each system shall be supplied by an individual circuit serving no other load. (3) Mechanical Protection of the Emergency System. The wiring of the emergency system of a hospital shall be mechanically protected by installation in non-flexible metal raceways, or shall be wired with Type MI cable. Where installed as branch circuit conductors serving patient care areas, the installation shall comply with the requirements of 517.13. Exception: Flexible power cords of appliances, or other utilization equipment, connected to the emergency system shall not be required to be enclosed in raceways. Informational Note: See 517.13(B) for additional grounding requirements in patient care areas. (D) Capacity of Systems. The essential electrical system shall have adequate capacity to meet the demand for the operation of all functions and equipment to be served by each system and branch. Feeders shall be sized in accordance with Articles 215 and 220. The generator set(s) shall have sufficient capacity and proper rating to meet the demand produced by the load of the essential electrical system(s) at any one time. Demand calculations for sizing of the generator set(s) shall be based upon one or more of the following: (1) Prudent demand factors and historical data (2) Connected load (3) Feeder calculation procedures described in Article 220" 18. Insert Figure 517.29(B)(4)(a): [image omitted; see the official code] 19. Insert Figure 517.29(B)(4)(b): [image omitted; see the official code] 20. Revise section 517.30 to read: "Sources of Power. (A) Three Independent Sources of Power. Hospital electrical systems shall have a minimum of three independent sources of power: a normal source, an auxiliary source, and a final reserve source. Hospitals are required to have a System I Emergency System as defined in Article 700. Essential electrical systems of hospitals providing obstetrical or surgical or critical care treatment shall be supplied by a minimum of two or more separate central station fed electrical services plus an on-site final reserve source, as per Figure 517.29(B)(4)(a). Exception: Hospitals not providing obstetrical, surgical or critical care treatment shall be served by a minimum of two independent sources; a normal and a final reserve source. (B) Alternate Source of Power. The alternate source of power shall consist of an auxiliary or a final reserve source of power. (C) Location of Essential Electrical System Components. Careful consideration shall be given to the location of the spaces housing the components of the essential electrical system to minimize interruptions caused by natural forces common to the area (e.g., storms, floods, earthquakes, or hazards created by adjoining structures or activities). Service rooms, generator rooms, and wire closets shall be for the exclusive use of electrical switchgear and distribution equipment. They shall not be used for other systems or equipment. All electrical equipment shall be installed in electrical rooms. They shall be void of air circulation ducts, piping systems for liquids, gases, or vapors. They shall contain no foreign equipment. Branch circuit panelboards feeding critical care areas shall be located on the same floor as the loads they serve. These panelboards shall be easily accessible from the areas that they serve. Exception: Air circulation ducts designed to provide supply air or exhaust exclusively for those service rooms or wire closets. (D) Location of Transfer Switches and Distribution Equipment. Transfer switches and distribution equipment for the essential electrical systems shall not be in the service or generator rooms. (E) Coordination. Overcurrent protective devices serving the essential electrical system shall be coordinated for the period of time that a fault’s duration extends beyond 0.1 second. Exception No. 1: Between transformer primary and secondary overcurrent protective devices, where only one overcurrent protective device or set of overcurrent protective devices exists on the transformer secondary. Exception No. 2: Between overcurrent protective devices of the same size (ampere rating) in series. Informational Note: The terms coordination and coordinated as used in this section do not cover the full range of overcurrent conditions." 21. Delete section 517.31. 22. Revise section 517.32 to read: "Emergency System. Those functions of patient care depending on lighting or appliances that are connected to the emergency system shall be divided into two mandatory branches: the life safety branch and the critical branch, described in 517.33 and 517.34. The branches of the emergency system shall be installed and connected to the alternate power source(s) so that all functions specified herein for the emergency system shall be automatically restored to operation within 10 seconds after interruption of the normal source." 23. Revise section 517.33 to read: "Life Safety Branch. No function other than those listed in (A) through (F) of this section shall be connected to the life safety branch. The life safety branch of the emergency system shall supply power for the following lighting and equipment. (A) Illumination of Means of Egress. Illumination of means of egress, such as lighting required for corridors, passageways, stairways, and landings at exit doors, and all necessary ways of approach to exits. (B) Exit Signs. Exit signs and exit directional signs. (C) Fire Alarm Systems. Fire alarm systems. (D) Elevators. Elevator cab lighting, control, communications, and signal systems." 24. Revise section 517.34 to read: "Critical Branch. (A) Task Illumination and Selected Receptacles. The critical branch of the emergency system shall supply power for task illumination, fixed equipment, selected receptacles, and special power circuits serving the following areas and functions related to patient care. (1) Critical care areas that utilize anesthetizing gases task illumination, selected receptacles, and fixed equipment. (2) The isolated power systems in special environments. (3) Patient care areas task illumination and selected receptacles in the following: (a) Infant nurseries (b) Medication preparation areas (c) Pharmacy dispensing areas (d) Selected acute nursing areas (e) Psychiatric bed areas (omit receptacles) (f) Ward treatment rooms (g) Nurses’ stations (unless adequately lighted by corridor luminaires). (4) Additional specialized patient care task illumination and receptacles, where needed (5) Nurse call systems (6) Blood, bone, and tissue banks (7) Telephone equipment room(s) and closet(s). (8) Task illumination, selected receptacles, and selected power circuits for: (a) General care beds (at least one duplex receptacle per patient bedroom) (b) Angiographic labs (c) Cardiac catheterization labs (d) Coronary care units (e) Hemodialysis rooms or areas (f) Emergency room treatment areas (selected) (g) Human physiology labs (h) Intensive care units (i) Postoperative recovery rooms (selected). Informational Note: Normal branch circuits are also required in these areas. (9) Additional task illumination, receptacles, and selected power circuits needed for effective hospital operation. Single phase fractional horsepower exhaust fan motors that are interlocked with 3 phase motors on the equipment shall be permitted to be connected to the critical branch. (B) Subdivision of the Critical Branch. It shall be permitted to subdivide the critical branch into two or more branches. (C) Receptacle Identification. The receptacles supplied by the critical branch shall be identified by permanent red coloring so as to be readily recognizable. (D) Alarm and Alerting Systems. Alarms required for systems used for the piping of nonflammable medical gases. (E) Systems for Patient Monitoring. Systems for monitoring patient condition or functions. (F) Communications Systems. Hospital communications systems, where used for issuing instructions during emergency conditions. (G) Generator Set Location. Task illumination battery charger for emergency battery powered lighting unit(s) and selected receptacles at the generator set location. (H) Generator Set Accessories. Generator set accessories as required for generator performance. Loads dedicated to a specific generator, including the fuel transfer pump(s), ventilation fans, electrically operated louvers, controls, cooling system and other generator accessories essential for generator operation, shall be connected to the critical branch or to the output terminals of the generator with overcurrent protective devices. (I) Automatic Doors. Electrically powered doors used for building egress. (J) Circuit Branch Receptacle Feeder Load. Critical branch feeder load for receptacles shall be calculated based on 300 VA for each duplex or equivalent receptacle outlet and 1920 VA for the dedicated receptacle at each patient headwall location for equipment requiring in excess of 7-1/2 amperes. Demand factors shown in Table 517.34(J) shall be allowed for critical feeder receptacle loads. Table 517.34(J) Demand Factors for Critical Receptacle Feeder Loads Beds | Demand Factor % Bed Location Duplex Receptacles | Dedicated Bed Receptacles 4 or less | 65% | 100% 5 to 8 | 50% | 75% 9 or more | 40% | 65% 25. Revise section 517.35 to read: "Equipment System Connection to Alternate Power Source. The equipment system shall be installed and connected to the alternate power source, such that the equipment described in 517.35(A) is automatically restored to operation at appropriate time lag intervals following the energizing of the emergency system. Its arrangement shall also provide for the subsequent connection of equipment described in 517.35(B). (A) Equipment for Delayed Automatic Connection. The following equipment shall be arranged for delayed automatic connection to the alternate power source: (1) Central suction systems serving medical and surgical functions, including controls. Such suction systems shall be permitted on the critical branch. (2) Sump pumps and other equipment required to operate for the safety of major apparatus, including associated control systems and alarms. (3) Compressed air systems serving medical and surgical functions, including controls. (4) Smoke control and stair pressurization systems. (5) Kitchen hood supply and/or exhaust systems, if required to operate during a fire in or under the hood. Exception: Sequential delayed automatic connection to the alternate power source to prevent overloading the generator shall be permitted where engineering studies indicate it is necessary. (B) Equipment for Delayed Automatic or Manual Connection. The following equipment shall be arranged for either delayed automatic or manual connection to the alternate power source: (1) Heating equipment to provide heating for operating, delivery, labor, recovery, intensive care, coronary care, nurseries, infection/ isolation rooms, emergency treatment spaces, and general patient rooms. (2) An elevator(s) selected to provide service to patient, surgical, obstetrical, and ground floors during interruption of normal power. In instances where interruption of normal power would result in other elevators stopping between floors, throw over facilities shall be provided to allow the temporary operation of any elevator for the release of patients or other persons who may be confined between floors. (3) Supply, return, and exhaust ventilating systems for surgical and obstetrical delivery suites, intensive care, coronary care, nurseries, infection/isolation rooms, emergency treatment spaces, and exhaust fans for laboratory fume hoods, nuclear medicine areas where radioactive material is used, ethylene oxide evacuation, and anesthesia evacuation. (4) Hyperbaric facilities. (5) Hypobaric facilities. (6) Automatically operated doors. (7) Minimal electrically heated autoclaving equipment shall be permitted to be arranged for either automatic or manual connection to the alternate source. (8) Other selected equipment shall be permitted to be served by the equipment system. (C) AC Equipment for Nondelayed Automatic Connection. Generator accessories, including but not limited to, the transfer fuel pump, electrically operated louvers, and other generator accessories essential for generator operation shall be arranged for automatic connection to the alternate power source." 26. Revise section 517.40 to read: "Essential Electrical Systems for Nursing Homes and Limited Care Facilities. (A) Applicability. The requirements of Part III, 517.40(C) through 517.44, shall apply to nursing homes and limited care facilities. Exception: Freestanding buildings used as nursing homes and limited care facilities, provided: (a) Admitting and discharge policies are maintained that preclude the provision of care for any patient or resident who may need to be sustained by electrical life support equipment. (b) No surgical treatment requiring general anesthesia is offered. (c) An automatic battery operated system(s) or equipment is provided that shall be effective for at least 2 hours and is otherwise in accordance with Article 700 and that shall be capable of supplying lighting for exit lights, exit corridors, stairways, nursing stations, medical preparation areas, boiler rooms, and communication areas. This system shall also supply power to operate all alarm systems. (B) Inpatient Hospital Care Facilities. Nursing homes and limited care facilities that provide inpatient hospital care shall comply with the requirements of Part III, 517.29 through 517.35. (C) Facilities Contiguous with Hospitals. Nursing homes and limited care facilities that are contiguous or located on the same site with a hospital shall be permitted to have their essential electrical systems supplied by that of the hospital." 27. Insert new figure 517.40: [image omitted; see the official code] 28. Revise section 517.41 to read: "Sources of Power. (A) Two Independent Sources of Power. Essential electrical systems shall have a minimum of two independent sources of power: a normal source generally supplying the entire electrical system, and one or more alternate sources for use when the normal source is interrupted. (B) Alternate Source of Power. The alternate source of power shall be a generator(s) driven by some form of prime mover(s), and located on the premises. Exception No. 1: Where the normal source consists of generating units on the premises, the alternate source shall be either another generator set, or an external utility service. Exception No. 2: Nursing homes or limited care facilities meeting the requirements of 517.40(A), Exception, shall be permitted to use a battery system or self-contained battery integral with the equipment. (C) Location of Essential Electrical System Components. Careful consideration shall be given to the location of the spaces housing the components of the essential electrical system to minimize interruptions caused by natural forces common to the area (e.g., storms, floods, earthquakes, or hazards created by adjoining structures or activities). Consideration shall also be given to the possible interruption of normal electrical services resulting from similar causes as well as possible disruption of normal electrical service due to internal wiring and equipment failures. Informational Note: Facilities whose normal source of power is supplied by two or more separate central station fed services experience greater than normal electrical service reliability than those with only a single feed. Such a dual source of normal power consists of two or more electrical services fed from separate generator sets or a utility distribution network having multiple power input sources and arranged to provide mechanical and electrical separation so that a fault between the facility and the generating sources will not likely cause an interruption of more than one of the facility service feeders." 29. Revise section 517.42 to read: "Essential Electrical Systems. (A) General. Essential electrical systems for nursing homes and limited care facilities shall be comprised of two separate branches capable of supplying a limited amount of lighting and power service, which is considered essential for the protection of life safety and effective operation of the institution during the time normal electrical service is interrupted for any reason. These two separate branches shall be the life safety branch and the critical branch. (B) Transfer Switches. The number of transfer switches to be used shall be based upon reliability, design, and load considerations. Each branch of the essential electrical system shall be served by one or more transfer switches as shown in Figure 517.40. (C) Capacity of System. The essential electrical system shall have adequate capacity to meet the demand for the operation of all functions and equipment to be served by each branch at one time. (D) Separation from Other Circuits. The life safety branch shall be kept entirely independent of all other wiring and equipment and shall not enter the same raceways, boxes, or cabinets with other wiring except in transfer switches." 30. Revise section 517.43 to read: "Automatic Connection to Life Safety Branch. The life safety branch shall be so installed and connected to the alternate source of power that all functions specified herein shall be automatically restored to operation within 10 seconds after the interruption of the normal source. No function other than those listed in 517.43(A) through (E) shall be connected to the life safety branch. The life safety branch shall supply power for the following lighting and equipment: Informational Note: The life safety branch is called the emergency system in Standard for Health Care Facilities, NFPA 99. (A) Illumination of Means of Egress. Illumination of means of egress as is necessary for corridors, passageways, stairways, landings, and exit doors and all ways of approach to exits. (B) Exit Signs. Exit signs and exit directional signs. (C) Required Fire Alarm Systems. Required fire alarm systems. (D) Dining and Recreation Areas. Sufficient lighting in dining and recreation areas to provide illumination to exit ways. (E) Elevators. Elevator cab lighting, control, communications, and signal systems" 31. Revise section 517.44 to read: "Connection to Critical Branch. The critical branch shall be so installed and connected to the alternate power source that the equipment listed in 517.44(A) shall be automatically restored to operation at appropriate time lag intervals following the restoration of the life safety branch to operation. Its arrangement shall also provide for the additional connection of equipment listed in 517.44(B) by either delayed automatic or manual operation. (A) Delayed Automatic Connection. The following equipment shall be connected to the critical branch and shall be arranged for delayed automatic connection to the alternate power source: (1) Patient care areas – task illumination and selected receptacles in: a. Medication preparation areas. b. Pharmacy dispensing areas. c. Nurses' stations (unless adequately lighted by corridor luminaires). (2) Sump pumps and other equipment required to operate for the safety of major apparatus and associated control systems and alarms. (3) Alarms and alerting systems including alarms required for systems used for the piping of nonflammable medical gases. (4) Task illumination and selected receptacles in the generator set location. (5) Communications systems, where used for issuing instructions during emergency conditions. (6) Smoke control and stair pressurization systems. (7) Kitchen hood supply and/or exhaust systems, if required to operate during a fire in or under the hood. (B) Delayed Automatic or Manual Connection. The following equipment shall be connected to the critical branch and shall be arranged for either delayed automatic or manual connection to the alternate power source: (1) Heating Equipment. Heating equipment to provide heating for patient rooms. (2) Elevator Service. In instances where disruption of power would result in elevators stopping between floors, throw over facilities shall be provided to allow the temporary operation of any elevator for the release of passengers. For elevator cab lighting, control, and signal system requirements, see 517.42(E). (3) Additional Loads. Additional illumination, receptacles, and equipment shall be permitted to be connected only to the critical branch." 32. Revise section 517.45 to read: "Essential Electrical Systems for Ambulatory Health Care Occupancies. (A) Applicability. The requirements of this section shall apply to ambulatory health care occupancies, other than those covered by Section 517.29 or Section 517.40. (B) Connections. The essential electrical system shall supply power for: (1) Task illumination that is related to the safety of life and that is necessary for the safe cessation of procedures in progress. (2) All anesthesia and resuscitative equipment used in areas where inhalation anesthetics are administered to patients, including alarm and alerting devices. (3) All electrical life support equipment in areas where procedures are performed that require such equipment for the support of the patient's life. (C) Alternate Source of Power. (1) Power Source. The alternate source of power for the system shall be specifically designed for this purpose and shall be either a generator, battery system, or self-contained battery integral with the equipment. Exception: If critical care (category 1) areas are present in the facility, the essential electrical system shall be as required in 517.29 through 517.35. (2) System Capacity. The alternate source of power shall be separate and independent of the normal source and shall have a capacity to sustain its connected loads for a minimum of 2 hours after loss of the normal source. (3) System Operation. The system shall be arranged so that, in the event of a failure of the normal power source, the alternate source of power shall be automatically connected to the load within 10 seconds." 33. Insert Figure 517.45: [image omitted; see the official code] 34. Insert new section 517.50 to read: "Essential Electrical Systems for Health Care Facilities Not Covered in 517.29, 517.40, and 517.45. (A) Applicability. The requirements of this section shall apply to health care facilities other than those covered by Sections 517.29, 517.40 or 517.45. (B) Connections. The essential electrical system shall supply power for: (1) Task illumination that is related to the safety of life and that is necessary for the safe cessation of procedures in progress. (2) All anesthesia and resuscitative equipment used in areas where inhalation anesthetics are administered to patients, including alarm and alerting devices. (C) Alternate Source of Power. (1) Power Source. The alternate source of power for the system shall be specifically designed for this purpose and shall be either a generator, battery system, or self-contained battery integral with the equipment. Exception: If electrical life support equipment is required, the essential electrical system shall be as required in 517.29 through 517.35. (2) System Capacity. The alternate source of power shall be separate and independent of the normal source and shall have a capacity to sustain its connected loads for a minimum of 2 hours after loss of the normal source. (3) System Operation. The system shall be arranged so that, in the event of a failure of the normal power source, the alternate source of power shall be automatically connected to the load within 10 seconds." 35. Revise subsection 517.61(B)(1) to read: "Wiring Methods. Wiring above a hazardous (classified) location referred to in 517.60 shall be installed in rigid metal conduit, electrical metallic tubing, intermediate metal conduit, or Type MI cable." 36. Revise subsection 517.61(C)(1) to read: "Wiring Methods. Wiring serving other-than-hazardous (classified) locations, as defined in 517.60, shall be installed in a metal raceway system. The metal raceway system shall qualify as an equipment grounding conductor in accordance with 250.118. Type MI cable shall have an outer metal armor, sheath, or sheath assembly that is identified as an acceptable equipment grounding conductor." 37. Revise subsection 517.61(C)(4) to read: "Anesthetizing Location Power Circuits. Each power circuit within, or partially within an anesthetizing location referred in 517.60 shall be isolated from any distribution system by the use of an isolated power system." (Amend Coun. J. 4-10-19, p. 100029, Art. VI, § 4; Amend Coun. J. 7-24-19, p. 3646, § 37)

Municipal Code of Chicago § 14E-5-518 Assembly occupancies.

14E-5-518 Assembly occupancies. The provisions of Article 518 of NFPA 70 are adopted by reference with the following modifications: 1. Revise subsection 518.4(A) to read: "General. The fixed wiring methods shall be metal raceways, flexible metal raceways, or Type MI cable. Exception: Fixed wiring methods shall be as provided in Article 640 for audio signal processing, amplification, and reproduction equipment, in Article 800 for communications circuits, in Article 725 for Class 2 and Class 3 remote-control and signaling circuits, and in Article 760 for fire alarm circuits." 2. Delete subsections 518.4(B) and (C).

Municipal Code of Chicago § 14E-5-520 Theaters, audience areas of motion picture and television studios, and similar locations.

14E-5-520 Theaters, audience areas of motion picture and television studios, and similar locations. The provisions of Article 520 of NFPA 70 are adopted by reference with the following modifications: 1. Revise subsection 520.5(A) to read: "General. The fixed wiring methods shall be metal raceways or Type MI cable. Exception: Fixed wiring methods shall be as provided in Article 640 for audio signal processing, amplification, and reproduction equipment, in Article 800 for communications circuits, in Article 725 for Class 2 and Class 3 remote-control and signaling circuits, and in Article 760 for fire alarm circuits." 2. Delete subsection 520.5(C).

Municipal Code of Chicago § 14E-5-522 Control systems for permanent amusement attractions.

14E-5-522 Control systems for permanent amusement attractions. The provisions of Article 522 of NFPA 70 are adopted by reference without modification.

Municipal Code of Chicago § 14E-5-525 Carnivals, circuses, fairs, and similar events.

14E-5-525 Carnivals, circuses, fairs, and similar events. The provisions of Article 525 of NFPA 70 are adopted by reference without modification.

Municipal Code of Chicago § 14E-5-530 Motion picture and television studios and similar locations.

14E-5-530 Motion picture and television studios and similar locations. The provisions of Article 530 of NFPA 70 are adopted by reference with the following modification: 1. Revise section 530.11 to read: "Permanent Wiring. The permanent wiring shall be Type MI cable, or in approved raceways. Exception: Communications circuits; audio signal processing, amplification, and reproduction circuits; Class 1, Class 2, and Class 3 remote-control or signaling circuits and power-limited fire alarm circuits shall be permitted to be wired in accordance with Articles 640, 725, 760, and 800."

Municipal Code of Chicago § 14E-5-540 Motion picture projection rooms.

14E-5-540 Motion picture projection rooms. The provisions of Article 540 of NFPA 70 are adopted by reference without modification.

Municipal Code of Chicago § 14E-5-545 Manufactured buildings.

14E-5-545 Manufactured buildings. The provisions of Article 545 of NFPA 70 are not adopted. Article 545 shall read in its entirety: "545.1 Scope. This article covers the requirements for a manufactured building and building components as herein defined. 545.2 Definitions. Building Component. Any subsystem, subassembly, or other system designed for use in or integral with or as part of a structure, which can include structural, electrical, mechanical, plumbing, and fire protection systems, and other systems affecting health and safety. Closed Construction. Any building, building component, assembly, or system manufactured in such a manner that all concealed parts of processes of manufacture cannot be inspected after installation at the building site without disassembly, damage, or destruction. Manufactured Building. Any building that is of closed construction and is made or assembled in manufacturing facilities on or off the building site for installation, or for assembly and installation on the building site, other than manufactured homes, mobile homes, park trailers, or recreational vehicles. 545.3 Other Articles. Manufactured buildings shall comply with all applicable articles of this Code."

Municipal Code of Chicago § 14E-5-547 Agricultural buildings.

14E-5-547 Agricultural buildings. The provisions of Article 547 of NFPA 70 are adopted by reference with the following modification: 1. Revise subsection 547.5(A) to read: "Wiring Methods. Raceways suitable for the location, with approved termination fittings, shall be the wiring method employed. The wiring methods of Article 502, Part II, shall be permitted for areas described in 547.1(A)."

Municipal Code of Chicago § 14E-5-550 Mobile homes, manufactured homes, and mobile home parks.

14E-5-550 Mobile homes, manufactured homes, and mobile home parks. The provisions of Article 550 of NFPA 70 are adopted by reference with the following modifications: 1. Revise section 550.1 to read: "Scope. To the extent such installations are subject to regulation by the City of Chicago, the provisions of this article cover the electrical conductors and equipment installed within or on mobile homes, the conductors that connect mobile to a supply of electricity, and the installation of electrical wiring, luminaires, equipment, and appurtenances related to electrical installations within a mobile home park up to the mobile home service- entrance conductors or, if none, the mobile home service equipment. Manufactured homes shall comply with Chapters 1 through 4 of this Code with regard to materials, electrical installation and electrical construction methods. Informational Note: For additional information on manufactured housing see NFPA 501-2013, Standard on Manufactured Housing, and Part 3280, Manufactured Home Construction and Safety Standards, of the Federal Department of Housing and Urban Development." 2. Revise section 550.10 to read: "Power Supply. (A) Feeder. The power supply to the mobile home shall be a feeder assembly consisting of a permanently installed feeder of at least 60 amperes. (B) Point of Entrance. The point of entrance of the feeder assembly to the mobile home shall be in the exterior wall, floor, or roof. (C) Mast Weatherhead or Raceway. The permanent feeder shall be installed by one of the following means: (1) One mast weatherhead installation, installed in accordance with Article 230, containing four continuous, insulated, color-coded feeder conductors, one of which shall be an equipment grounding conductor (2) A metal raceway from the disconnecting means in the mobile home to the underside of the mobile home, with provisions for the attachment to a suitable junction box or fitting to the raceway on the underside of the mobile home." 3. Revise Section 550.15 to read: "Wiring Methods and Materials. Except as specifically limited in this section, the wiring methods and materials included in this Code shall be used in mobile homes and manufactured homes. (A) Metal Faceplates. Where metal faceplates are used, they shall be effectively grounded. (B) Installation Requirements. If a range, clothes dryer, or similar appliance is connected by metal- covered cable or flexible metal conduit, a length of not less than 900 mm (3 ft) of free cable or conduit shall be provided to permit moving the appliance. The cable or flexible metal conduit shall be secured to the wall. Type NM or Type SE cable shall not be used to connect a range or dryer. (C) Raceways. Where rigid metal conduit or intermediate metal conduit is terminated at an enclosure with a locknut and bushing connection, two locknuts shall be provided, one inside and one outside of the enclosure. Surface raceway shall be permitted. All cut ends of conduit shall be reamed or otherwise finished to remove rough edges. (D) Switches. Switches shall be rated as follows: (1) For lighting circuits, switches shall be rated not less than 15 amperes, 120 to 125 volts, and in no case less than the connected load. (2) For motors or other loads, switches shall have ampere or horsepower ratings, or both, adequate for loads controlled. (An ac general-use snap switch shall be permitted to control a motor 2 hp or less with full-load current not over 80 percent of the switch ampere rating.) (E) Under-Chassis Wiring (Exposed to Weather). (1) Where outdoor or under-chassis line-voltage (120 volts, nominal, or higher) wiring is exposed to moisture or physical damage, it shall be protected by rigid metal conduit or intermediate metal conduit. The conductors shall be suitable for wet locations. Exception: Electrical metallic tubing or rigid nonmetallic conduit shall be permitted where closely routed against frames and equipment enclosures (2) The conductors shall be Type TW, or equivalent. (F) Boxes, Fittings, and Cabinets. Boxes, fittings, and cabinets shall be securely fastened in place and shall be supported from a structural member of the home, either directly or by using a substantial brace. (G) Appliance Terminal Connections. Appliances having branch-circuit terminal connections that operate at temperatures higher than 60°C (140°F) shall have circuit conductors as described in (1) or (2) of this subsection. (1) Branch-circuit conductors having an insulation suitable for the temperature encountered shall be permitted to be run directly to the appliance. (2) Conductors having an insulation suitable for the temperature encountered shall be run from the appliance terminal connection to a readily accessible outlet box placed at least 300 mm (1 ft) from the appliance. These conductors shall be in a suitable raceway that shall extend for at least 1.2 m (4 ft). (H) Component Interconnections. Fittings and connectors that are intended to be concealed at the time of assembly shall be listed and identified for the interconnection of building components. Such fittings and connectors shall be equal to the wiring method employed in insulation, temperature rise, and fault- current withstanding and shall be capable of enduring the vibration and shock occurring in mobile home transportation."

Municipal Code of Chicago § 14E-5-551 Recreational vehicles and recreational vehicle parks.

14E-5-551 Recreational vehicles and recreational vehicle parks. The provisions of Article 551 of NFPA 70 are adopted by reference without modification.

Municipal Code of Chicago § 14E-5-552 Park trailers.

14E-5-552 Park trailers. The provisions of Article 552 of NFPA 70 are adopted by reference with the following modification: 1. Revise section 552.48 to read: "Wiring Methods. (A) Wiring Systems. Cables and raceways shall be installed in accordance with the permissible Chapter 3 wiring methods, except as otherwise specified in this article. An equipment grounding means shall be provided in accordance with 250.118. (B) Conduit and Tubing. Where rigid metal conduit or intermediate metal conduit is terminated at an enclosure with a locknut and bushing connection, two locknuts shall be provided, one inside and one outside of the enclosure. All cut ends of conduit and tubing shall be reamed or otherwise finished to remove rough edges. (C) Boxes. In walls and ceilings constructed of wood or other combustible material, boxes and fittings shall be flush with the finished surface or project therefrom. (D) Mounting. Wall and ceiling boxes shall be mounted in accordance with Article 314. Exception No. 1: Snap-in-type boxes or boxes provided with special wall or ceiling brackets that securely fasten boxes in walls or ceilings shall be permitted. Exception No. 2: A wooden plate providing a 1-1/2 in. minimum width backing around the box and of a thickness of 1/2 in. or greater (actual) attached directly to the wall panel shall be considered as approved means for mounting outlet boxes. (E) Raceway and Cable Continuity. Raceways and cable, shall be continuous between outlet boxes and other enclosures. (F) Protected. Electrical metallic tubing shall be permitted to pass through the centers of the wide side of 2x4 wood studs. However, they shall be protected where they pass through 2x2 wood studs or at other wood studs or frames where the cable or tubing would be less than 31.8 mm (1-1/4 in.) from the inside or outside surface. Steel plates on each side of the cable or tubing or a steel tube, with not less than 0.053 in. wall thickness, shall be installed to protect the cable or tubing. (G) Cable Supports. Where connected with cable connectors or clamps, cables shall be secured and supported within 305 mm (12 in.) of outlet boxes, panelboards, and splice boxes on appliances. Supports and securing shall be provided at intervals not exceeding 1.37 m (4.5 ft) at other places. (H) Physical Damage. Where subject to physical damage, exposed nonmetallic cable shall be installed in metal raceways. (I) Receptacle Faceplates. Metal faceplates shall comply with 406.5(A). Nonmetallic faceplates shall comply with 406.5(C). (J) Metal Faceplates Grounded. Where metal faceplates are used, they shall be grounded. (K) Moisture or Physical Damage. Where outdoor or under-chassis wiring is 120 volts, nominal, or over and is exposed to moisture or physical damage, the wiring shall be protected by rigid metal conduit, by intermediate metal conduit, by electrical metallic tubing, or by Type MI cable that is closely routed against frames and equipment enclosures or other raceway or cable identified for the application. (L) Component Interconnections. Fittings and connectors that are intended to be concealed at the time of assembly shall be listed and identified for the interconnection of building components. Such fittings and connectors shall be equal to the wiring method employed in insulation, temperature rise, and fault- current withstanding, and shall be capable of enduring the vibration and shock occurring in park trailers. (M) Method of Connecting Expandable Units. The method of connecting expandable units to the main body of the park trailer shall comply with the following as applicable: (1) Cord-and-Plug Connected. Cord-and-plug connections shall comply with 552.48(M)(1)(a) through (M)(1)(d). (a) The portion of a branch circuit that is installed in an expandable unit shall be permitted to be connected to the portion of the branch circuit in the main body of the vehicle by means of a flexible cord or attachment plug and cord listed for hard usage. The cord and its connections shall comply with all provisions of Article 400 and shall be considered as a permitted use under 400.10. (b) Where the receptacle provided for connection of the cord to the main circuit is located on the outside of the park trailer, it shall be protected with a ground-fault circuit interrupter for personnel and be listed for wet locations. A cord located on the outside of a park trailer shall be identified for outdoor use. (c) Unless removable or stored within the park trailer interior, the cord assembly shall have permanent provisions for protection against corrosion and mechanical damage while the park trailer is in transit. (d) The attachment plug and cord shall be installed so as not to permit exposed live attachment plug pins. (2) Direct Wires Connected. That portion of a branch circuit that is installed in an expandable unit shall be permitted to be connected to the portion of the branch circuit in the main body of the park trailer by means of flexible cord installed in accordance with 552.48(M)(2)(a) through (M)(2)(f) or other approved wiring method. (a) The flexible cord shall be listed for hard usage and for use in wet locations. (b) The flexible cord shall be permitted to be exposed on the underside of the vehicle. (c) The flexible cord shall be permitted to pass through the interior of a wall or floor assembly or both a maximum concealed length of 610 mm (24 in.) before terminating at an outlet or junction box. (d) Where concealed, the flexible cord shall be installed in nonflexible conduit or tubing that is continuous from the outlet or junction box inside the park trailer to a weatherproof outlet box, junction box, or strain relief fitting listed for use in wet locations that is located on the underside of the park trailer. The outer jacket of flexible cord shall be continuous into the outlet or junction box. (e) Where the flexible cord passes through the floor to an exposed area inside of the park trailer, it shall be protected by means of conduit and bushings or equivalent. (f) Where subject to physical damage, the flexible cord shall be protected with RMC, IMC, Schedule 80 PVC, reinforced thermosetting resin conduit (RTRC) listed for exposure to physical damage, or other approved means and shall extend at least 6 in. above the floor. A means shall be provided to secure the flexible cord where it enters the park trailer. (N) Prewiring for Air-Conditioning Installation. Prewiring installed for the purpose of facilitating future air-conditioning installation shall comply with the applicable portions of this article and the following: (1) An overcurrent protective device with a rating compatible with the circuit conductors shall be installed in the distribution panelboard and wiring connections completed. (2) The load end of the circuit shall terminate in a junction box with a blank cover or other listed enclosure. Where a junction box with a blank cover is used, the free ends of the conductors shall be adequately capped or taped. (3) A safety label with the signal word WARNING in minimum 1/4 in. high letters and body text in minimum 1/8 in. high letters on a contrasting background. The safety label shall be affixed on or adjacent to the junction box and shall read: AIR-CONDITIONING CIRCUIT. THIS CONNECTION IS FOR AIR CONDITIONERS RATED 110 – 125-VOLT AC, 60 HZ, ___ AMPERES MAXIMUM. DO NOT EXCEED CIRCUIT RATING. EXCEEDING THE CIRCUIT RATING MAY CAUSE A FIRE AND RESULT IN DEATH OR SERIOUS INJURY. An ampere rating, not to exceed 80 percent of the circuit rating, shall be legibly marked in the blank space. (4) The circuit shall serve no other purpose. (O) Prewiring for Other Circuits. Prewiring installed for the purpose of installing other appliances or devices shall comply with the applicable portions of this article and the following: (1) An overcurrent protection device with a rating compatible with the circuit conductors shall be installed in the panelboard with wiring connections completed. (2) The load end of the circuit shall terminate in a junction box with a blank cover or a device listed for the purpose. Where a junction box with blank cover is used, the free ends of the conductors shall be adequately capped or taped. (3) A safety label with the signal word WARNING in minimum 1/4 in. high letters and body text in minimum 1/8 in. high letters on a contrasting background. The safety label shall be affixed to the junction box or device listed for the purpose and shall read: THIS CONNECTION IS FOR ____ RATED ____ VOLT AC, 60 HZ, ____ AMPERES MAXIMUM. DO NOT EXCEED THE CIRCUIT RATING. EXCEEDING THE CIRCUIT RATING MAY CAUSE A FIRE AND RESULT IN DEATH OR SERIOUS INJURY. The intended appliance type shall be legibly marked in the first blank space. An ampere rating not to exceed 80 percent of the circuit rating shall be legibly marked in the second blank space."

Municipal Code of Chicago § 14E-5-553 Floating buildings.

14E-5-553 Floating buildings. The provisions of Article 553 of NFPA 70 are adopted by reference with the following modification: 1. Revise subsection 553.7(B) to read: "Wiring Methods. Liquidtight flexible metal conduit with approved fittings shall be permitted for feeders and where flexible connections are required for services. Extra-hard usage portable power cable listed for both wet locations and sunlight resistance shall be permitted for a feeder to a floating building where flexibility is required. Other raceways suitable for the location shall be permitted to be installed where flexibility is not required."

Municipal Code of Chicago § 14E-5-555 Marinas and boatyards.

14E-5-555 Marinas and boatyards. The provisions of Article 555 of NFPA 70 are adopted by reference without modification.

Municipal Code of Chicago § 14E-5-560 Residential occupancies.

14E-5-560 Residential occupancies. The following language shall be inserted as a new Article 560: "560 Residential Occupancies Part I. General 560.1 Scope. The special provisions of this section shall apply to the electrical installations in residential occupancies. In some cases they are repetitious and in some cases they are variations of general requirements appearing elsewhere in this Code. 560.2 Wiring Methods. (A) Low-Voltage Class 2 Wiring. Low-voltage wiring for control or signaling, telephone systems, antenna systems, or communication systems which is enclosed in building partitions, walls or in any way made inaccessible by building construction need not be enclosed in a raceway except at locations where such wiring may be subject to mechanical injury. Informational Note: Raceways when used will protect the conductors during construction and provide ready means for replacement of conductors after the building is completed. These raceways need not terminate in a box or fitting as long as normal precautions are taken to protect the conductors against injury. (B) Other than Low-Voltage Class 2 Wiring. All wiring other than low-voltage class 2 wiring shall comply with the applicable provisions of Chapter 3. 560.3 Smoke Detectors and Carbon Monoxide Detectors. Smoke detectors and carbon monoxide detectors shall be provided and installed in accordance with Chapter 13-64 of the Chicago Building Code. Part II. Branch Circuits 560.4 General. Part II specifies the branch circuit, receptacle outlets, and lighting outlet requirements. Voltages for branch-circuit, receptacle outlets and lighting outlets shall be limited to those specified in 210.6. Informational Note: See 210.12 and exceptions for arc-fault circuit-interrupter (AFCI) protection requirements. 560.5 Branch Circuit Requirements. Branch circuits for lighting and for appliances, including motor-operated appliances, shall be provided to supply the loads computed in accordance with 220.10. These circuits shall comply with the requirements of 210.25. In addition, branch circuits shall be provided for specific loads not covered by 220.10 where required elsewhere in this Code and for dwelling unit loads as specified in 560.5(A) through (F). (A) Number of Branch Circuits. The minimum number of branch circuits shall be determined from the total computed load and the size or rating of the circuits used. In all installations, the number of circuits shall be sufficient to supply the load served. In no case shall the load on any circuit exceed the maximum specified by 220.18. (B) Small Appliance Branch Circuits. In addition to the number of branch circuits required by other parts of this section, two or more 20-ampere small-appliance branch circuits shall be provided for all receptacle outlets specified by 560.6(B). (C) Laundry Branch Circuits. In addition to the number of branch circuits required by other parts of this section, at least one additional 20-ampere branch circuit shall be provided to supply the laundry receptacle outlet(s) required by 560.6(F). This circuit shall have no other outlets. (D) Bathroom Branch Circuit. In addition to the number of branch circuits required by other parts of this section, at least one 120-volt, 20-ampere branch circuit shall be provided to supply the bathroom(s) receptacle outlet(s). This circuit shall have no other outlets. (E) Garage Branch Circuits. In addition to the number of branch circuits required by other parts of this section, at least one 120-volt, 20-ampere branch circuit shall be installed to supply receptacle outlets in garages. This circuit shall have no other outlets. Exception: This circuit shall be permitted to supply readily accessible outdoor receptacle outlets Informational Note: See 422.12 for central heating equipment branch circuit requirements. (F) Guest Rooms. Branch circuits shall be installed in accordance with 210.60. 560.6 Receptacle Outlet Requirements. This section provides requirements for 125-volt, 15- and 20-ampere receptacle outlets. The receptacles required by this section shall be in addition to any receptacle that is: (1) Part of a luminaire or appliance, or (2) Controlled by a wall switch in accordance with 210.70(A)(1), Exception No. 1, or (3) Located within cabinets or cupboards, or (4) Located more than 1.7 m (5-1/2 ft) above the floor Permanently installed electric baseboard heaters equipped with factory-installed receptacle outlets or outlets provided as a separate assembly by the manufacturer shall be permitted as the required outlet or outlets for the wall space utilized by such permanently installed heaters. Such receptacle outlets shall not be connected to the heater circuits. Informational Note No. 1: Listed baseboard heaters include instructions that may not permit their installation below receptacle outlets. Informational Note No. 2: See 210.8(A) for ground-fault circuit-interrupter (GFCI) protection requirements. (A) General Provisions. In every kitchen, family room, dining room, living room, parlor, library, den, sunroom, bedroom, recreation room, or similar room or area of dwelling units, receptacle outlets shall be installed in accordance with the general provisions specified in 560.6(A)(1) through (A)(4). (1) Spacing. Receptacles shall be installed such that no point measured horizontally along the floor line of any wall space is more than 1.8 m (6 ft) from a receptacle outlet. (2) Wall Space. As used in this section, a wall space shall include the following: (1) Any space 600 mm (2 ft) or more in width (including space measured around corners) and unbroken along the floor line by doorways and similar openings, fireplaces, and fixed cabinets that do not have countertops or similar work surfaces (2) The space occupied by fixed panels in walls, excluding sliding panels (3) The space afforded by fixed room dividers, such as freestanding bar-type counters or railings (3) Floor Receptacles. Receptacle outlets in or on floors shall not be counted as part of the required number of receptacle outlets unless located within 450 mm (18 in.) of the wall. (4) Countertop and Similar Work Surface Receptacle Outlets. Receptacles installed for countertop and similar work surfaces as specified in 560.6(C) shall not be considered as the receptacle outlets required by 560.6(A). (B) Small Appliances. (1) Receptacle Outlets Served. In the kitchen, pantry, breakfast room, dining room, or similar area of a dwelling unit, the two or more 20-ampere small-appliance branch circuits required by 560.5(C)(1) shall serve all wall and floor receptacle outlets covered by 560.6(A), all countertop outlets covered by 560.6(C), and receptacle outlets for refrigeration equipment. Exception No. 1: In addition to the required receptacles specified by 560.6, switched receptacles supplied from a general-purpose branch circuit as defined in 560.7(A)(1), Exception No. 1, shall be permitted. Exception No. 2: In addition to the required receptacles specified by 560.6, a receptacle outlet to serve a specific appliance shall be permitted to be supplied from an individual branch circuit rated 15 amperes or greater. (2) No Other Outlets. The two or more small-appliance branch circuits specified in 560.6(B)(1) shall have no other outlets. Exception No. 1: A receptacle installed solely for the electrical supply to and support of an electric clock in any of the rooms specified in 560.6(B)(1). Exception No. 2: Receptacles installed to provide power for supplemental equipment and lighting on gas-fired ranges, ovens, or counter-mounted cooking units. (3) Kitchen Receptacle Requirements. Receptacles installed in a kitchen to serve countertop surfaces shall be supplied by not fewer than two small-appliance branch circuits, either or both of which shall also be permitted to supply receptacle outlets in the same kitchen and in other rooms specified in 560.6(B)(1). Additional small-appliance branch circuits shall be permitted to supply receptacle outlets in the kitchen and other rooms specified in 560.6(B)(1). No small- appliance branch circuit shall serve more than one kitchen. (C) Countertops and Work Surfaces. In kitchens, pantries, breakfast rooms, dining rooms, and similar areas of dwelling units, receptacle outlets for countertop and work surfaces shall be installed in accordance with 560.6(C)(1) through (C)(5). (1) Wall Countertop and Work Surface. A receptacle outlet shall be installed at each wall countertop and work surface that is 300 mm (12 in.) or wider. Receptacle outlets shall be installed so that no point along the wall line is more than 600 mm (24 in.) measured horizontally from a receptacle outlet in that space. Exception: Receptacle outlets shall not be required on a wall directly behind a range, counter- mounted cooking unit, or sink in the installation described in Figure 560.6(C)(1). [image omitted; see the official code] Figure 560.6(c)(1) Determination of Area Behind a Range, Counter-Mounted Cooking Unit, or Sink (2) Island Countertop Spaces. At least one receptacle shall be installed at each island countertop space with a long dimension of 600 mm (24 in.) or greater and a short dimension of 300 mm (12 in.) or greater. (3) Peninsular Countertop Spaces. At least one receptacle outlet shall be installed at each peninsular countertop space with a long dimension of 24 in. or greater and a short dimension of 12 in. or greater. A peninsular countertop is measured from the connected perpendicular wall. (4) Separate Spaces. Countertop spaces separated by rangetops, refrigerators, or sinks shall be considered as separate countertop spaces in applying the requirements of 560.6(C)(1). If a range, counter-mounted cooking unit, or sink is installed in an island or peninsular countertop and the depth of the countertop behind the range, counter-mounted cooking unit, or sink is less than 300 mm (12 in.), the range, counter-mounted cooking unit, or sink shall be considered to divide the countertop space into two separate countertop spaces. Each separate countertop space shall comply with the applicable requirements in 560.6(C). (5) Receptacle Outlet Location. Receptacle outlets shall be located on or above, but not more than 500 mm (20 in.) above, the countertop or work surface. Receptacle outlet assemblies listed for use in countertops or work surfaces shall be permitted to be installed in countertops or work surfaces. Receptacle outlets rendered not readily accessible by appliances fastened in place, appliance garages, sinks, or rangetops as covered in 560.6(C)(1), Exception, or appliances occupying dedicated space shall not be considered as these required outlets. Informational Note: See 406.5(E) and 406.5(G) for requirements for installation of receptacles in countertops and 406.5(F) and 406.5(G) for requirements for installations of receptacles in work surfaces. Exception to (5): To comply with the following conditions (1) and (2), receptacle outlets shall be permitted to be mounted not more than 300 mm (12 in.) below the countertop or work surface. Receptacles mounted below a countertop or work surface in accordance with this exception shall not be located where the countertop or work surface extends more than 150 mm (6 in.) beyond its support base. (1) Construction for the physically impaired (2) On island and peninsular countertops where the countertop is flat across its entire surface (no backsplashes, dividers, etc.) and there are no means to mount a receptacle within 500 mm (20 in.) above the countertop, such as an overhead cabinet (D) Bathrooms. At least one receptacle outlet shall be installed in bathrooms within 900 mm (3 ft) of the outside edge of each basin. The receptacle outlet shall be located on a wall or partition that is adjacent to the basin or basin countertop, located on the countertop, or installed on the side or face of the basin cabinet. In no case shall the receptacle be located more than 300 mm (12 in.) below the top of the basin or basin countertop. Receptacle outlet assemblies listed for use in countertops shall be permitted to be installed in the countertop Informational Note: See 406.5(E) and 406.5(G) for requirements for installation of receptacles in countertops. (E) Outdoor Outlets. Outdoor receptacle outlets shall be installed in accordance with 560.6(E)(1) through (E)(3). Informational Note: See 210.8(A)(3). (1) One-Family and Two-Family Dwellings. For a one-family dwelling and each unit of a two- family dwelling that is at grade level, at least one receptacle outlet readily accessible from grade and not more than 2.0 m (6-1/2 ft) above grade level shall be installed at the front and back of the dwelling. (2) Multifamily Dwellings. For each dwelling unit of a multifamily dwelling where the dwelling unit is located at grade level and provided with individual exterior entrance/egress, at least one receptacle outlet readily accessible from grade and not more than 2.0 m (6-1/2 ft) above grade level shall be installed. (3) Balconies, Decks, and Porches. Balconies, decks, and porches that are attached to the dwelling unit and are accessible from inside the dwelling unit shall have at least one receptacle outlet accessible from the balcony, deck, or porch. The receptacle shall not be located more than 2.0 m (6-1/2 ft) above the balcony, deck, or porch walking surface. (F) Laundry Areas. In dwelling units, at least one receptacle outlet shall be installed in areas designated for the installation of laundry equipment. Exception No. 1: A receptacle for laundry equipment shall not be required in a dwelling unit of a multifamily building where laundry facilities are provided on the premises for use all by all building occupants. Exception No. 2: A receptacle for laundry equipment shall not be required in other than one-family dwellings where laundry facilities are not to be installed or permitted. (G) Basements, Garages, and Accessory Buildings. For one- and two-family dwellings, at least one receptacle outlet shall be installed in the areas specified in 560.6(G)(1) through (3). These receptacles shall be in addition to receptacles required for specific equipment. (1) Garages. In each garage at least one receptacle outlet shall be installed in each vehicle bay and not more than 1.7 m (5-1/2 ft) above the floor. (2) Accessory Buildings. In each accessory building with electric power. (3) Basements. In each separate unfinished portion of a basement (H) Hallways. In dwelling units, hallways of 3.0 m (10 ft) or more in length shall have at least one receptacle outlet. As used in this subsection, the hallway length shall be considered the length along the centerline of the hallway without passing through a doorway. (I) Foyers. Foyers that are not part of a hallway in accordance with 560.6(H) and that have an area that is greater than 5.6 m2 (60 ft2) shall have a receptacle(s) located in each wall space 900 mm (3 ft) or more in width. Doorways, door side windows that extend to the floor, and similar openings shall not be considered wall space. 560.7 Lighting Outlets Required. Lighting outlets shall be installed where specified in 560.7(A), (B), and (C). (A) Dwelling Units. In dwelling units, lighting outlets shall be installed in accordance with 560.7(A)(1), (A)(2), and (A)(3). (1) Habitable Rooms. At least one wall switch-controlled lighting outlet shall be installed in every habitable room, kitchen, and bathroom. Exception No. 1: In other than kitchens and bathrooms, one or more receptacles controlled by a wall switch shall be permitted in lieu of lighting outlets. Exception No. 2: Lighting outlets shall be permitted to be controlled by occupancy sensors that are (1) in addition to wall switches or (2) located at a customary wall switch location and equipped with a manual override that will allow the sensor to function as a wall switch. (2) Additional Locations. Additional lighting outlets shall be installed in accordance with the following: (1) At least one wall switch-controlled lighting outlet shall be installed in hallways, stairways, and garages. (2) For dwelling units, garages, at least one wall switch-controlled lighting outlet shall be installed to provide illumination on the exterior side of outdoor entrances or exits with grade level access. A vehicle door in a garage shall not be considered as an outdoor entrance or exit. (3) Where one or more lighting outlet(s) are installed for interior stairways, there shall be a wall switch at each floor level, and landing level that includes an entryway, to control the lighting outlet(s) where the stairway between floor levels has six risers or more. Exception to (A)(2)(1), (A)(2)(2), and (A)(2)(3): In hallways, in stairways, and at outdoor entrances, remote, central, or automatic control of lighting shall be permitted. (4) Lighting outlets controlled in accordance with 560.7(A)(2)(3) shall not be controlled by the use of dimmer switches unless they provide the full range of dimming control at each location. (5) At least one wall switch-controlled lighting outlet shall be installed in clothes closets over 2.3 m2 (25 ft2). Closet luminaires shall be permanently installed lighting outlets. (6) At least one wall switch-controlled lighting outlet shall be installed over each sink or basin in a room or area that is greater than 5.95 m2 (64 ft2). Such lighting outlets shall be in addition to the general lighting outlets installed in the room or area. (3) Storage or Equipment Spaces. For attics, underfloor spaces, utility rooms, and basements, at least one lighting outlet containing a switch or controlled by a wall switch shall be installed where these spaces are used for storage or contain equipment requiring servicing. At least one point of control shall be at the usual point of entry to these spaces. The lighting outlet shall be provided at or near the equipment requiring servicing. (B) Emergency Systems. For multifamily dwelling units containing five or more units, in addition to the lighting outlets required in 560.7(A)(2), lighting outlets shall be installed in accordance with Article 700. The lighting outlets required to illuminate corridors and stairwells may be connected to a photocell located in the area to be illuminated if adequate natural illumination is present during daylight hours to illuminate those areas. Time clocks shall not be used. These emergency lights shall supplement normal lighting in stairwells and corridors. High rise buildings containing dwelling units shall comply with 700.30 and 700.65. Exception: On existing buildings not exceeding four stories in height containing only vertical stairwells (no corridors) all of the stairwell lights may be connected to the emergency service. Normal lighting will not be required in these stairwells. Part III. Branch-Circuit, Feeder, and Service Calculations 560.8 Scope. 560.9 to 560.21 provide the requirements for computing branch-circuit, feeder, and service loads. 560.9 Calculations. (A) Voltages. Unless other voltages are specified, for purposes of computing branch-circuit and feeder loads, nominal system voltages of 120, 120/240, 208Y/120, and 240 volts shall be used. (B) Fractions of an Ampere. Except where computations result in a fraction of an ampere 0.5 or larger, such fractions shall be permitted to be dropped. 560.10 Computation of Branch Circuit Loads. Branch-circuit loads shall be computed as shown in (A) and (B) of this section. (A) Lighting Load. A unit load of not less than 3VA shall constitute the minimum lighting load for each square foot of floor area. The floor area for each floor shall be computed from the outside dimensions of the building, dwelling unit, or other area involved. The computed floor area shall not include open porches, garages, or unused or unfinished spaces not adaptable for future use. (B) Other Loads. The minimum load for each outlet for general-use receptacles and outlets not used for general illumination shall not be less than that computed in (1) through (5) of this subsection, the loads shown being based on nominal branch-circuit voltages. (1) Specific Appliances or Loads. An outlet for a specific appliance or other load not covered in (2) through (5) of this subsection shall be computed based on the ampere rating of the appliance or load served. (2) Electric Dryers and Household Electric Cooking Appliances. Load computations shall be permitted as specified in 560.18 for electric dryers and 560.19 for electric ranges and other cooking appliances. (3) Motor Loads. Outlets for motor loads shall be computed in accordance with the requirements in 430.22 and 430.24 and Article 440. (4) Recessed Lighting Fixtures. An outlet supplying recessed lighting fixture(s) shall be computed based on the maximum volt-ampere rating of the equipment and lamps for which the fixture(s) is rated. (5) Dwelling Occupancies. In one-family, two-family, and multifamily dwellings and in guest rooms of hotels and motels, the outlets specified in (a), (b), and (c) of this subsection are included in the general lighting load calculations of 560.9. No additional load calculations shall be required for such outlets. a. All general-use receptacle outlets of 20-ampere rating or less, including receptacles connected to the circuits in 560.5(C)(3). b. The receptacle outlets specified in 560.6(E) and (G). c. The lighting outlets specified in 560.7(A) and (B). 560.11 Maximum Loads. The total load shall not exceed the rating of the branch circuit and it shall not exceed the maximum loads specified in (A) through (C) of this section, under the conditions specified therein. (A) Motor-Operated and Combination Loads. Where a circuit supplies only motor-operated loads, Article 430 shall apply. Where a circuit supplies only air-conditioning equipment, refrigerating equipment, or both, Article 440 shall apply. For circuits supplying loads consisting of motor-operated utilization equipment that is fastened in place and that has a motor larger than 1/8 hp in combination with other loads, the total computed load shall be based on 125 percent of the largest motor load plus the sum of the other loads. (B) Inductive and LED Lighting Loads. For circuits supplying lighting units that have ballasts, transformers, autotransformers, or LED drivers, the computed load shall be based on the total ampere ratings of such units and not on the total watts of the lamps. (C) Range Loads. It shall be permissible to apply demand factors for range loads in accordance with Table 220.55, including Note 4. 560.12 Computed Load of Feeders and Services. The computed load of a feeder or service shall not be less than the sum of the loads on the branch circuits supplied, as determined by 560.7 through 560.10 after any applicable demand factors permitted by 560.12 through 560.20 have been applied. 560.13 General Lighting. The demand factors specified in Table 560.12 shall apply to that portion of the total branch-circuit load computed for general illumination. They shall not be applied in determining the number of branch circuits for general illumination. Table 560.13 Lighting Load Demand Factors Type of Occupancy | Portion of Lighting Load to Which Demand Factor Applies (Volt-Amperes) | Demand Factor (%) Dwelling units | First 3,000 atFrom 3,001 to 120,000 atRemainder over 120,000 at | 1003525 Hotels and motels including apartment houses without provision for cooking by tenants* | First 20,000 or less atNext 80,000 atRemainder over 100,000 at | 504030 *The demand factors of this table shall not apply in the computed load of feeders or services supplying areas in hotels, and motels where the entire lighting is likely to be used at one time, as in ballrooms or dining rooms. 560.14 Motors. Motor loads shall be computed in accordance with 430.22, 430.24, 430.25, and 430.26 and with 440.6 for hermetic refrigerant motor-compressors. 560.15 Fixed Electric Space Heating. Fixed electric space heating loads shall be computed at 100 percent of the total connected load; however, in no case shall a feeder or service load current rating be less than the rating of the largest branch circuit supplied. Exception: Where reduced loading of the conductors results from units operating on duty-cycle, intermittently, or from all units not operating at one time, the authority having jurisdiction may grant permission for feeder conductors to have an ampacity less than 100 percent, provided the conductors have an ampacity for the load so determined. 560.16 Small Appliance and Laundry Loads. (A) Small Appliance Circuit Load. In each dwelling unit, the load shall be computed at 1,500 volt- amperes for each 2-wire small-appliance branch circuit required by 560.5(C)(1). Where the load is subdivided through two or more feeders, the computed load for each shall include not less than 1,500 volt-amperes for each 2-wire small-appliance branch circuit. These loads shall be permitted to be included with general lighting load and subjected to the demand factors provided in Table 560.13. Exception: The individual branch circuit permitted by 560.6(B)(1), Exception No. 2 shall be permitted to be excluded from the calculation required by 560.16. (B) Laundry Circuit Load. A load of not less than 1,500 volt-amperes shall be included for each 2-wire laundry branch circuit installed as required by 560.5(C)(2). This load shall be permitted to be included with the general lighting load and subjected to the demand factors provided in Table 560.13. 560.17 Appliance Load. It shall be permissible to apply a demand factor of 75 percent to the nameplate rating load of four or more appliances fastened in place, other than electric ranges, clothes dryers, space-heating equipment, or air-conditioning equipment, that are served by the same feeder or service in a one-family, two- family, or multifamily dwelling. 560.18 Electric Clothes Dryers. The load for household electric clothes dryers in a dwelling unit(s) shall be 5,000 watts (volt-amperes) or the nameplate rating, whichever is larger, for each dryer served. The use of the demand factors in Table 220.54 shall be permitted. Where two or more single-phase dryers are supplied by a 3-phase, 4-wire feeder or service, the total load shall be computed on the basis of twice the maximum number connected between any two phases. Kilovolt-amperes (kVA) shall be considered equivalent to kilowatts (kW) for loads computed in this section. 560.19 Electric Ranges and Other Cooking Appliances. The demand load for household electric ranges, wall- mounted ovens, counter-mounted cooking units, and other household cooking appliances individually rated in excess of 1-3/4 kW shall be permitted to be computed in accordance with Table 220.55. Kilovolt-amperes (kVA) shall be considered equivalent to kilowatts (kW) for loads computed in this section. Where two or more single-phase ranges are supplied by a 3-phase, 4-wire feeder or service, the total load shall be computed on the basis of twice the maximum number connected between any two phases. 560.20 Noncoincident Loads. Where it is unlikely that two dissimilar loads will be in use simultaneously, it shall be permissible to omit the smaller of the two loads(s) in computing the total load of a feeder or service. 560.21 Feeder or Service Neutral Load. (A) Basic Calculation. The feeder or service neutral load shall be the maximum unbalance of the load determined by this article. The maximum unbalanced load shall be the maximum net calculated load between the neutral conductor and any one ungrounded conductor. Exception: For 3-wire, 2-phase or 5-wire, 2-phase systems, the maximum unbalanced load shall be the maximum net calculated load between the neutral conductor and any one ungrounded conductor multiplied by 140 percent. (B) Permitted Reductions. A service or feeder supplying the following loads shall be permitted to have an additional demand factor of 70 percent applied to the amount in 560.21(B)(1) or portion of the amount in 560.21(B)(2) determined by the following basic calculations: (1) A feeder or service supplying household electric ranges, wall-mounted ovens, counter-mounted cooking units, and electric dryers, where the maximum unbalanced load has been determined in accordance with Table 220.55 for ranges and Table 220.54 for dryers (2) That portion of the unbalanced load in excess of 200 amperes where the feeder or service is supplied from a 3-wire dc or single-phase ac system; or a 4-wire, 3-phase system; or a 3-wire, 2-phase system; or a 5-wire, 2-phase system (C) Prohibited Reductions. There shall be no reduction of the neutral or grounded conductor capacity applied to the amount in 560.21(C)(1), or portion of the amount in (C)(2), from that determined by the basic calculation: (1) Any portion of a 3-wire circuit consisting of 2 ungrounded conductors and the neutral conductor of a 4-wire, 3-phase, wye-connected system (2) That portion consisting of nonlinear loads supplied from a 4-wire, wye-connected, 3-phase system Informational Note: A 3-phase, 4-wire, wye-connected power system used to supply power to nonlinear loads may necessitate that the power system design allow for the possibility of high harmonic neutral-conductor currents Part IV. Services and Service Disconnecting Means 560.22 Services and Service-Entrance Conductors. (A) General. Services shall comply with the requirements of Article 230. (B) Size and Rating of Service Conductors. (1) General. The ampacity of the service-entrance conductors before the application of any adjustment or correction factors, shall not be less than either (a) or (b) of this subsection. Loads shall be calculated in accordance with Article 220. Allowable ampacity shall be determined from Article 310. (2) Continuous and Noncontinuous Loads. Continuous and noncontinuous loads shall be calculated in accordance with either (a) or (b) below. (a) The sum of the noncontinuous loads plus 125% of continuous loads. (b) The sum of the noncontinuous load plus the continuous load if the service entrance conductors terminate in an overcurrent device that is listed for operations at 100% of its rating. (3) Ungrounded Conductors. Ungrounded conductors shall have an ampacity of not less than the minimum rating of the disconnecting means specified in 230.79. (4) Grounded Conductors. The grounded conductor shall not be less than the minimum size as required by 250.24(B). Grounded conductors shall be the same size as the ungrounded conductors for all services up to and including 400 amperes. 560.23 Service Disconnecting Means. (A) General. Means shall be provided to disconnect all conductors from the service-entrance conductors. (B) Location. The service disconnecting means shall be installed in accordance with 560.23(B)(1), (B)(2), and (B)(3),(A)(4), and (A)(5). (1) One- and Two-Family Dwellings. In one- and two-family dwellings the service disconnecting means shall be installed at a readily accessible location in the basement or first floor of the building at a point not exceeding 1.52 m (5 ft) from the point of entry into the building. When the length of the service raceway exceeds 1.52 m (5 ft) from the point of entry into the building, the service raceway shall conform to the requirements of 230.6. (2) In Other Than One- and Two-Family Dwellings. In other than one- and two-family dwellings, the service disconnecting means shall be installed at a readily accessible location either outside of the building or structure or inside the building or structure nearest the point of entrance of the service conductors. When the length of the service raceway exceeds 1.52 m (5 ft) from the point of entry into the building, the service raceway shall conform to the requirements of 230.6. (3) Bathrooms. Service disconnecting means shall not be installed in bathrooms. (4) Remote Control. Where a remote control device(s) is used to actuate the service disconnecting means, the service disconnecting means shall be located in accordance with 230.70(A)(1). (5) High Rise Buildings. In high rise buildings and other similar buildings of large area, the disconnecting means for the multiple services recognized by 230.2(B)(2) shall be located in a dedicated fire-rated room as near as practical to the serving utility vault. The rooms for the "main" service disconnecting means which serve the building common element loads shall have a 3-hour fire rating. The electrical service rooms for tenant loads shall have a 2-hour minimum fire rating. These rooms shall be for the exclusive use of electrical equipment. Where more than one service is permitted to serve one floor, the various disconnecting means and their locations shall be prominently identified as required by 230.2(E). (6) Multiple Occupancy Buildings. Each occupant shall have access to the occupant’s service disconnecting means. In a multiple occupancy building supplied by a single service with a common accessible space available, the disconnecting means may consist of no more than six switches which shall be in accordance with the requirements of 230.71. (C) Marking. Each service disconnect shall be permanently marked to identify it as a service disconnect. (D) Rating of Service Disconnecting Means. The service disconnecting means shall have a rating not less than the load to be carried, determined in accordance with Article 220. In no case shall the rating be lower than specified in (1), (2), (3), or (4) of this subsection. (1) One-Circuit Installation. For installations to supply only limited loads of a single branch circuit, the service disconnecting means shall have a rating of not less than 15 amperes. (2) Two-Circuit Installations. For installations consisting of not more than two 2-wire branch circuits, the service disconnecting means shall have a rating of not less than 30 amperes. (3) One-Family Dwelling. For a one-family dwelling, the service disconnecting means shall have a rating of not less than 100 amperes, 3-wire. (4) All Others. For all other installations, the service disconnecting means shall have a rating of not less than 60 amperes. 560.24 Metering. Where a current supply is separately metered as in an apartment building, each such separately metered load shall be equipped with a meter disconnecting means which will disconnect the separately meter load from its source of supply. Such disconnect(s) shall conform to provisions of Part VI of Article 230. Meters and disconnects shall be grouped and shall be located in meter closets if they are not installed in the basement. In all cases, the meter disconnect shall be immediately adjacent to its own meter. However where six or fewer meters are installed outside the building the foregoing provisions shall not apply, and in such cases the meter disconnects shall be installed in accordance with 560.23." (Amend Coun. J. 11-8-17, p. 59720, § 22)

Municipal Code of Chicago § 14E-5-570 Requirements for existing dwelling-type occupancies not exceeding four stories in height.

14E-5-570 Requirements for existing dwelling-type occupancies not exceeding four stories in height. The following language shall be inserted as a new Article 570: "570 Requirements for Existing Dwelling Units in Buildings Not Exceeding Four Stories in Height 570.1 Scope. This article covers the electrical requirements, installation requirements, and connection requirements for an existing dwelling unit in a building not exceeding four stories in height, including an existing dwelling unit in a building of mixed occupancy not exceeding four stories in height, and the common areas serving those dwelling units, when the alterations, remodeling, or repairs do not encompass 60% or more of the building structure, dwelling unit, or electrical system. 570.2 Not Covered. Dwelling occupancies not covered in 570.1 shall comply with Article 560 and other applicable articles of this Code. 570.3 General. All electrical installations, alterations and repairs shall be performed by an electrical contractor. 570.4 Permits. The electrical contractor shall obtain an electrical permit for all electrical work to be performed. Electrical permits shall be obtained before any work is started. 570.5 Plans. All plans and load calculations required by 215.5 shall be submitted before any electrical work is started. All plans and load calculations are subject to field inspection. 570.6 Electrical Heating. All electrical heat installations and conversions shall conform to the provisions of Articles 422 and 424. 570.7 Emergency Lighting. All buildings which contain five or more dwelling units shall conform to the provisions of Article 700, as they apply to emergency lighting requirements. 570.8 Ground Fault Circuit-Interrupter Protection for Personnel. All 125-volt, single phase, 15- and 20-ampere receptacle outlets installed in bathrooms, garages, counter top spaces, unfinished basements and outdoor locations shall have ground fault circuit interrupter protection for personnel. Informational Note: See 210.12 and exceptions for arc-fault circuit-interrupter (AFCI) protection requirements. 570.9 Minimum Standards. When alterations, remodeling, or repairs encompass less than 60% of a building structure, dwelling unit, or electrical system, the wiring serving such building or structure shall conform to (a), (b), and (c) of this section. (a) Any part of the building structure, dwelling unit, or electrical system upon which alterations, remodeling, or repairs are performed shall comply with the provisions of 570.10(A) through (I) and the other applicable sections of this Code. (b) For existing dwelling occupancies not exceeding four stories in height or in the residential portion of an existing building of mixed occupancy not exceeding four stories in height, the portion of the building being altered, remodeled, or repaired shall comply with the provisions of 570.10(A) through (I). In addition, there shall be a minimum of 60 amperes supply for each altered, remodeled, or repaired dwelling unit that is not a hotel or motel guest room. Informational Note: Mixed occupancies include but are not limited to, mixed commercial and dwelling types. (c) Simple repairs that do not involve structural alterations, such as replacing non-functioning switches, shall comply with the provisions of 570.10 (A), (B), (G), (H) and (I). 570.10. Specific Requirements. (A) Ampacity Requirements. All existing electrical service, feeders, branch circuits, or system and equipment grounding, required to meet the standards set forth in this section shall be in an approved, acceptable condition and shall be of adequate ampacity for the load being served. For the purposes of this requirement, any existing electrical service being altered, remodeled or repaired shall be a minimum of 60 amperes supply for each dwelling unit that is not a hotel or motel guest room. (B) Overcurrent Protection. All over-current protection required to meet the standards set forth in this section shall be of the proper size. When plug fuses are utilized, they shall be "Type S." (C) Branch Lighting Circuits. Each dwelling unit shall be provided with a minimum of one 15-ampere general lighting branch circuit for each 46.5 m2 (500 ft2) of living space. This branch circuit may supply the general use receptacle outlets. (D) Small Appliance Branch Circuits. Each dwelling unit shall be provided with a minimum of one 20-ampere small appliance branch circuit to supply a minimum of two receptacle outlets serving countertops in each kitchen. This circuit shall be permitted to also serve a laundry receptacle. (E) Receptacle Outlet Requirements. An adequate number of receptacle outlets shall be provided in every habitable room of each dwelling unit to eliminate the need for the use of cord extension wiring. The minimum number of receptacle outlets required for various sized rooms is shown in Table 570.10. Receptacle outlets serving kitchen countertops shall be ground-fault circuit-interrupter protected. At least one ground-fault circuit-interrupter protected wall mounted receptacle outlet shall be installed in each bathroom adjacent to the basin. (F) Lighting Outlets Required. At least one wall switch-controlled lighting outlet shall be installed in each habitable room. Closets shall be adequately illuminated and shall contain light fixtures with a completely enclosed lamp, unless adequate illumination is supplied from adjacent fixtures outside the closet. (G) Covers. All electrical boxes and outlets shall be provided with approved covers or plates. (H) Smoke Alarms. Smoke alarms as required by the Chicago Building Code shall be installed. All smoke alarms shall be approved. (I) Carbon Monoxide Detectors. Carbon monoxide detectors as required by the Chicago Building Code shall be installed. All carbon monoxide detectors shall be approved. Table 570.10 Minimum Receptacle Outlets Required Room Size | Minimum Receptacle Outlets Required* 1 to 64 ft2 (example 8 ft x 8 ft) | 2, on opposite walls 65 to 100 ft2 (example 10 ft x 10 ft) | 3, on adjacent walls greater than 100 ft2 (example 12 ft x 12 ft) | 1 on each wall * Where a straight wall exceeds 20 ft, a minimum of one receptacle outlet shall be provided for every 18 ft of that wall. 570.11 Wiring Methods. In addition to those wiring methods recognized in Chapter 3, the following wiring method is recognized as suitable: Trade size 3/8 flexible metal conduit or listed MC cable may be used for extensions to general lighting or appliance branch circuits not exceeding 20 amperes. Trade size 3/8 flexible metal conduit and MC cable extensions are permitted between an existing outlet and two new outlets located in new or existing walls or partitions. Installation of trade size 3/8 flexible metal conduit and MC cable extensions shall be permitted in lengths up to 7.62 m (25 ft). The number of conductors permitted in a trade size 3/8 flexible metal conduit extension shall conform to Table 570.11. All flexible metal conduit shall contain a properly sized equipment grounding conductor sized to Table 250.122. Table 570.11 Maximum Number of Insulated Conductors in Trade Size 3/8 Flexible Metal Conduit* Size (AWG) | Fitting Location | Type RFH-2, SF-2 | TF, XHHW, TW | TFN, THHN, THWN | FEP, FEBP, PF, PGF Size (AWG) | Fitting Location | Type RFH-2, SF-2 | TF, XHHW, TW | TFN, THHN, THWN | FEP, FEBP, PF, PGF 18 | Inside Conduit | 2 | 3 | 5 | 5 Outside Conduit | 3 | 5 | 8 | 8 16 | Inside Conduit | 1 | 3 | 4 | 4 Outside Conduit | 2 | 4 | 6 | 6 14 | Inside Conduit | 1 | 2 | 3 | 3 Outside Conduit | 2 | 3 | 4 | 4 12 | Inside Conduit | - | 1 | 2 | 2 Outside Conduit | - | 2 | 3 | 3 10 | Inside Conduit | - | 1 | 1 | 1 Outside Conduit | - | 1 | 1 | 2 *In addition, one insulated, covered, or bare equipment grounding conductor of the same size shall be permitted."

Municipal Code of Chicago § 14E-5-590 Temporary installations.

14E-5-590 Temporary installations. The provisions of Article 590 of NFPA 70 are adopted by reference with the following modifications: 1. Insert new Part II to read: "Temporary Booths or Exhibits Inside of Buildings 590.10 Connections to Building Systems. No exhibitor shall make any electrical installation to, or alteration of the permanent wiring inside of a building. 590.11 Qualified Person. All electrical connections to the building electrical system or extensions thereto shall be made under the supervision and direction of a qualified person. 590.12 Extensions from the Building System. Extensions from the building electrical system shall be made by one of the approved wiring methods in Chapter 3, or shall be made by flexible multi-conductor cord, with grounding conductor, rated for extra-hard usage. All extensions shall comply with 590.6. 590.13 Terminations. Terminations of extensions to the building electrical system shall be enclosed in assemblies specifically approved for the purpose by the authority having jurisdiction. 590.14 Cords Above Floor Level. Cords rated a minimum of hard usage shall be permitted to be used above floor level. 590.15 Arrangement of Cords. All cords shall be arranged in lengths and patterns, in a workmanlike manner, to avoid excess cord hazards. 590.16 Grounding. All flexible multiconductor cords shall have a grounding conductor and be rated for extra- hard usage or hard usage as permitted in 590.12 and 590.14, unless the cord is a component of an approved assembly. 590.17 Traffic Area. No cord shall be run across any space where subject to traffic unless the cord is enclosed in a substantial enclosure specifically approved for the purpose. 590.18 Cord Overcurrent Protection. All cords shall be protected by a properly sized overcurrent device. 590.19 Approval. For the purposes of this Article, all electrical equipment or appliances connected to the building electrical system or extensions thereto in booths or displays shall be: (1) Listed and labeled in accordance with 110.3; or (2) Specifically approved by the authority having jurisdiction and subject to field inspection. Informational Note: An unlisted foreign luminaire is an example of material which would require specific approval under (2) of this section. 590.20 Permanent Wiring. Wiring permanently installed on all booths or displays including prewired booths brought in for connection to the building electrical system shall be enclosed in a raceway as allowed by a wiring method recognized in Chapter 3. Where flexibility is necessary, such as between booth sections and at connection points to the building electrical system or supply points, properly rated cord in lengths not to exceed 1.83 m (6 ft) and equipped with approved attachment plugs shall be permitted to be utilized. 590.21 Splices. All splices and terminations shall be made in approved metal enclosures. 590.22 Supports. No electrical equipment shall be attached to or supported by either dividers or curtains. 590.23 Fastened in Place. All electrical equipment shall be securely fastened in place using a recognized method. Informational Note: Velcro, glue, tape, or similar methods are not suitable as a means of attachment. 590.24 Live Parts. There shall be no exposed energized current-carrying metal parts. 590.25 Exposed Metal Parts. All exposed noncurrent-carrying parts of the installations shall be effectively grounded in accordance with Article 250 of this Code. 590.26 Combustible Material. No electrical equipment or appliance which, under normal operating conditions, attains a surface temperature in excess of 90°C (194°F) shall be mounted on or supported from any combustible material, unless separated therefrom by a substantial noncombustible material. 590.27 Lighting Fixtures. Lighting fixtures or other appliances or equipment having other than a cord as outlined in 590.12 through 590.15 shall be permitted to be accepted provided the complete assembly, including the cord, is listed and labeled in accordance with 110.3. 590.28 Custom Displays. Unlabeled custom-made light fixtures and displays shall be permitted when fabricated using all listed and labeled components. Fabrication shall be by an electrical contractor. All equipment of this type shall be specifically approved by the authority having jurisdiction and shall be subject to field inspection. 590.29 Overcurrent Protection. All show wiring and related electrical equipment shall be provided with proper overcurrent protection as required in this Code. 590.30 Class 2 Wiring. All open class 2 wiring shall conform to Articles 725 of this Code and shall be fed from an approved Class 2 power source. For the purposes of this section only, a required non-interchangeable overcurrent device allowed to establish a Class 2 circuit shall be as follows: 0 - 15 volts – 5 amperes 15 - 30 volts – 3 amperes 30 - 60 volts – 1-1/3 amperes. 590.31 Low-Voltage Wiring. All wiring and equipment not conforming to 590.30 shall be wired in accordance with 590.20 through 590.29 and Article 411 of this Code." 2. Insert new Part III to read: "Signs 590.40 Disconnect. All signs shall have a readily accessible disconnect. 590.41 Transformers and Cords. Transformers and cords shall be approved in accordance with 110.3. 590.42 Enclosures. All splices between supply conductors and transformer primary leads shall be enclosed in a listed enclosure. If the display is custom made, the enclosure shall be a minimum No. 12 gauge sheet metal or the equivalent and shall be free from sharp edges. All custom made enclosures are subject to field inspection. 590.43 Splices. Splices between secondary transformer leads and neon tube conductor shall be adequately insulated and enclosed in a listed metal enclosure. 590.44 Protective Enclosure. Neon sign displays which are erected at a height of 2.4 m (8 ft) or below shall be provide with a protective plexiglass shield. The protective shield shall be mounted and arranged to provide adequate ventilation. Exception: The required shield shall be permitted to be omitted when in the opinion of the authority having jurisdiction, equivalent means of protection are provided. 590.45 Grounding. Grounding and bonding shall comply with the requirements of Article 250."

Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2670251Fetched: 10/24/2026