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GENERAL REQUIREMENTS FOR WIRING METHODS AND MATERIALS

Municipal Code of Chicago tit. 14E, ch. 14E-3
in effect

Municipal Code of Chicago § 14E-3-300 General requirements for wiring methods and materials.

14E-3-300 General requirements for wiring methods and materials. The provisions of Article 300 of NFPA 70 are adopted by reference with the following modification: 1. Revise section 300.5(D)(2) by adding the following sentence at the end: "Conductors entering a building shall be protected at the point of entrance by rigid metal conduit or intermediate metal conduit." 2. Revise section 300.22 to read: "Wiring in Ducts Not Used for Air-Handling, Fabricated Ducts for Environmental Air, Plenums, and Other Spaces for Environmental Air (Plenums). The provisions of this section apply to the installation and uses of electric wiring and equipment in ducts used for dust, loose stock, or vapor material; ducts specifically fabricated for environmental air; and other spaces used for environmental air (plenums). Informational Note: See Article 424, Part VI, for duct heaters. (A) Ducts for Dust, Loose Stock, or Vapor Removal. No wiring systems of any type shall be installed in ducts used to transport dust, loose stock, or flammable vapors. No wiring system of any type shall be installed in any duct, or shaft containing only such ducts, used for vapor removal or for ventilation of commercial-type cooking equipment. (B) Ducts Specifically Fabricated for Environmental Air. Equipment, devices, and the wiring methods specified in this section shall be permitted within such ducts only if they are necessary for the direct action upon, or sensing of, the contained air. Where equipment or devices are installed and illumination is necessary to facilitate maintenance and repair, enclosed gasketed-type luminaires shall be required. In ducts specifically fabricated to for environmental air, only the wiring methods consisting of the following shall be permitted: (1) Conductors or cables installed in electrical metallic tubing with gland nut type fittings, intermediate metal conduit or galvanized rigid metal conduit (2) Type MI Cable as permitted in Article 332 (3) Type MC Cable employing a smooth or corrugated impervious metal sheath without an overall nonmetallic covering, as permitted in Article 330 (4) Flexible metallic tubing as permitted in Article 360 (5) Liquidtight flexible metal conduit in lengths not to exceed 1.22 m (4 ft), to connect physically adjustable equipment and devices permitted to be in these ducts. (C) Other Space Used for Environmental Air (Plenums). This section shall apply to spaces not specifically fabricated for environmental air-handling purposes but used for air-handling purposes as a plenum. This section shall not apply to habitable rooms or areas of buildings, the prime purpose of which is not air handling. Informational Note: The space over a hung ceiling used for environmental air-handling purposes and the space below a raised floor used for environmental air-handling purposes are examples of the type of other space to which this section applies. Exception: This section shall not apply to the joist or stud spaces of dwelling units where the wiring passes through such spaces perpendicular to the long dimension of such spaces. (1) Wiring Methods. The wiring methods for such other space shall be limited to the following: (a) Conductors or cables installed in electrical metallic tubing with gland nut compression type fittings, intermediate metal conduit, or galvanized rigid metal conduit (b) Type MI Cable as permitted in Article 332 (c) Type MC Cable employing a smooth or corrugated impervious metal sheath without an overall nonmetallic covering as permitted in Article 330 (d) Flexible metallic tubing as permitted in Article 360 (e) Liquidtight flexible metal conduit in lengths not to exceed 1.83 m (6 ft), to connect physically adjustable equipment and devices, other than lighting fixtures, permitted to be in these spaces. (2) Luminaires and Electric Equipment. Electric equipment with a metal enclosure and no direct openings to the air space, and associated wiring material suitable for the ambient temperature shall be permitted to be installed in such other space unless prohibited elsewhere in this Code. Boxes shall have no holes and shall be provided with gasketed covers. Luminaires meeting these criteria and intended for use in this space shall be marked CCEA. Informational Note 1: Criteria for CCEA (City of Chicago Environmental Air) may be obtained from Underwriters Laboratories. Informational Note 2: This requirement is not intended to limit recessed fixtures that are constructed with tight seams and joints. Where so constructed no additional gasketing or sealing is required. Exception: Integral fan systems specifically identified for such use. (D) Information Technology Equipment. Electric wiring in air-handling areas beneath raised floors for information technology equipment shall be in accordance with 300.22(C) and Article 645." (Amend Coun. J. 10-7-20, p. 21791, Art. III, § 3)

Municipal Code of Chicago § 14E-3-310 Conductors for general wiring.

14E-3-310 Conductors for general wiring. The provisions of Article 310 of NFPA 70 are adopted by reference with the following modifications: 1. Insert the following language immediately before informational note no. 1 in subsection 310.15(B)(3)(a): "No more than nine current-carrying conductors shall be permitted to be installed in a raceway other than nipples." 2. Revise table 310.15(B)(3)(a) to read: Number of Current- Carrying Conductors | Percent of Values in Table 310.15(B)(16) through Table 310.15(B)(19) as Adjusted for Ambient Temperature if Necessary 4 – 6 | 80 7 – 9 | 70 (Amend Coun. J. 4-10-19, p. 100029, Art. VI, § 2)

Municipal Code of Chicago § 14E-3-312 Cabinets, cutout boxes, and meter socket enclosures.

14E-3-312 Cabinets, cutout boxes, and meter socket enclosures. The provisions of Article 312 of NFPA 70 are adopted by reference without modification.

Municipal Code of Chicago § 14E-3-314 Outlets, device, pull and junction boxes, conduit bodies; fittings; and handhole enclosures.

14E-3-314 Outlets, device, pull and junction boxes, conduit bodies; fittings; and handhole enclosures. The provisions of Article 314 of NFPA 70 are adopted by reference with the following modification: 1. Revise section 314.3 by deleting Exception No. 1 and Exception No. 2. (Amend Coun. J. 1-23-19, p. 94952, Art. I, § 18)

Municipal Code of Chicago § 14E-3-320 Armored cable: Type AC.

14E-3-320 Armored cable: Type AC. The provisions of Article 320 of NFPA 70 are adopted by reference with the following modifications: 1. Revise section 320.10 to read: "Uses Permitted. Type AC cable shall be permitted to be installed as specified in 320.10(A) or (B). (A) Existing Installations. Except where otherwise specified in this Code and where not subject to physical damage, listed Type AC cable with listed fittings and not exceeding 7.62 m (25 ft) in length between junction boxes shall be permitted to be installed for branch circuits in concealed work fished into existing walls, partitions, floors, or hard surface ceilings where other work does not require or include removal of the existing finished surface. (B) Exposed Work. For exposed work only under the following conditions: (1) In lengths not more than 1.83 m (6 ft), at terminations where flexibility is necessary; (2) In lengths not more than 1.83 m (6 ft) in accessible, but not habitable, attics and roof spaces where installed in accordance with 320.12; (3) In lengths not greater than 1.83 m (6 ft), below the basement ceiling joists where it is necessary to connect a cabinet or junction box." 2. Revise section 320.12 to read: "Uses Not Permitted. Type AC cable shall not be used for any installation not permitted in 320.10."

Municipal Code of Chicago § 14E-3-324 Flat conductor cable: Type FCC.

14E-3-324 Flat conductor cable: Type FCC. The provisions of Article 324 of NFPA 70 are adopted by reference without modification.

Municipal Code of Chicago § 14E-3-328 Medium voltage cable: Type MV.

14E-3-328 Medium voltage cable: Type MV. The provisions of Article 328 of NFPA 70 are adopted by reference without modification.

Municipal Code of Chicago § 14E-3-330 Metal-clad cable: Type MC.

14E-3-330 Metal-clad cable: Type MC. The provisions of Article 330 of NFPA 70 are adopted by reference with the following modifications: 1. Revise section 330.10 to read: "Uses Permitted. (A) Existing Installations. Except where otherwise specified in this Code and where not subject to physical damage, listed Type MC cable with listed fittings and not exceeding 7.62 m (25 ft) in length between junction boxes shall be permitted for branch circuits in concealed work fished into existing walls, partitions, floors, or hard surface ceilings where other work does not require or include removal of the existing finished surface. (B) Exposed Work. For exposed work only under the following conditions: (1) In lengths not more than 1.83 m (6 ft), at terminations where flexibility is necessary; (2) In lengths not greater than 1.83 m (6 ft) in accessible, but not habitable, attics and roof spaces where installed in accordance with 320.23; (3) In lengths not greater than 1.83 m (6 ft), below the basement ceiling joists where it is necessary to connect a cabinet or junction box." 2. Revise section 330.12 to read: "Uses Not Permitted. Type MC cable shall not be used for any installation not permitted in 330.10."

Municipal Code of Chicago § 14E-3-332 Mineral-insulated, metal-sheathed cable: Type MI.

14E-3-332 Mineral-insulated, metal-sheathed cable: Type MI. The provisions of Article 332 of NFPA 70 are adopted by reference without modification.

Municipal Code of Chicago § 14E-3-334 Nonmetallic-sheathed cable: Types NM, NMC, and NMS.

14E-3-334 Nonmetallic-sheathed cable: Types NM, NMC, and NMS. The provisions of Article 334 of NFPA 70 are adopted by reference with the following modifications: 1. Revise section 334.10 to read: "Uses Permitted. Type NM and Type NMC cables shall be permitted to be used in the following: (1) Temporary wiring for branch circuits as permitted in 590.4(C) (2) Temporary wiring as permitted for feeders as permitted in 590.4(B) (3) Limited extensions to knob-and-tube lighting or appliance branch circuits in existing dwelling units in buildings not exceeding three stories in height." 2. Revise section 334.12 to read: "Uses Not Permitted. (A) Types NM, and NMC. Types NM and NMC cables shall not be used for any installation not permitted in 334.10. (B) Type NMS. Type NMS cables shall not be used."

Municipal Code of Chicago § 14E-3-336 Power and control tray cable: Type TC.

14E-3-336 Power and control tray cable: Type TC. The provisions of Article 336 of NFPA 70 are adopted by reference with the following modifications: 1. Revise subsection 336.10, item (1) to read: "For control and signal circuits." 2. Delete subsections 336.10, items (6) through (10). 3. Revise section 336.12 to read: "Uses Not Permitted. Type TC tray cable shall not be installed or used as follows: (1) Installed where it will be exposed to physical damage (2) Installed outside a raceway or cable tray system (3) Used where exposed to direct rays of the sun, unless identified as sunlight resistant (4) Direct buried (5) Required fire alarm systems (6) In health care facilities, any patient communication or monitoring system" (Amend Coun. J. 11-8-17, p. 59720, § 15)

Municipal Code of Chicago § 14E-3-338 Service-entrance cable: Type SE and USE.

14E-3-338 Service-entrance cable: Type SE and USE. The provisions of Article 338 of NFPA 70 are adopted by reference with the following modifications: 1. Revise section 338.10 to read: "Uses Permitted. For existing buildings of non-transient residential occupancy containing not more than three dwelling units: (A) Service-Entrance Conductors. Service-entrance cable shall be permitted to be used as service- entrance conductors. (B) Branch Circuits. (1) Branch Circuit Conductors. Type SE service-entrance cable shall be permitted for circuit wiring for electric ranges, electric hot water heaters, and electric clothes dryers. (2) Grounded Conductor Insulated. Type SE service-entrance cables shall be permitted in wiring systems where all of the circuit conductors of the cable are of the thermoset or thermoplastic type. (3) Use of Uninsulated Conductor. Type SE service-entrance cable without individual insulation on the grounded conductor shall not be permitted for branch circuit wiring. (4) Temperature Limitations. Type SE service-entrance cable used to supply appliances shall not be subject to conductor temperatures in excess of the temperature specified for the type of insulation involved. (5) Installation Methods for Cables. Cables shall be installed in accordance with (a) through (d) as listed below. (a) Cable shall not be spliced, but shall be installed without interruption to the outlet (b) Installation shall have approved and listed fittings (c) In exposed installations, the cable shall follow closely follow the surface and be fastened at intervals not exceeding 450 mm (18 in.). (d) In exterior installations, the cable shall be installed in a workman like manner in straight lines and a drip loop shall be provided" 2. Revise section 338.12 to read: "Uses Not Permitted. Type SE and Type USE shall not be used for any installation not permitted in 338.10." (Amend Coun. J. 11-8-17, p. 59720, § 16)

Municipal Code of Chicago § 14E-3-340 Underground feeder and branch-circuit cable: Type UF.

14E-3-340 Underground feeder and branch-circuit cable: Type UF. The provisions of Article 340 of NFPA 70 are adopted by reference with the following modification: 1. Revise section 340.10 to read: "Uses Permitted. Listed Type UF cable shall be permitted as follows: (1) For use underground, including direct burial in the earth. For underground requirements, see 300.5. (2) As single-conductor cables. Where installed as single-conductor cables, all conductors of the feeder grounded conductor or branch circuit, including the grounded conductor and equipment grounding conductor, if any, shall be installed in accordance with 300.3. (3) For solar photovoltaic systems in accordance with 690.31. (4) As single-conductor cables as the non-heating leads for heating cables as provided in 424.43. Informational Note: See 310.15(A)(3) for temperature limitation of conductors."

Municipal Code of Chicago § 14E-3-342 Intermediate metal conduit: Type IMC.

14E-3-342 Intermediate metal conduit: Type IMC. The provisions of Article 342 of NFPA 70 are adopted by reference without modification.

Municipal Code of Chicago § 14E-3-344 Rigid metal conduit: Type RMC.

14E-3-344 Rigid metal conduit: Type RMC. The provisions of Article 344 of NFPA 70 are adopted by reference without modification.

Municipal Code of Chicago § 14E-3-348 Flexible metal conduit: Type FMC.

14E-3-348 Flexible metal conduit: Type FMC. The provisions of Article 348 of NFPA 70 are adopted by reference with the following modifications: 1. Revise section 348.10 to read: "Uses Permitted. FMC shall be permitted to be used: (1) For the connection of motors or recessed luminaires (2) In lengths not exceeding 7.62 m (25 ft) between junction boxes for branch circuits in concealed work fished into existing walls, partitions, floors, or hard surface ceilings where other work does not require or include removal of the existing finished surface (3) For required flexibility at the termination of conduit runs." 2. Insert new subsections 348.12(8) and (9) to read: "(8) In lengths exceeding 1.83 m (6 ft) except where fished in existing construction (9) Where exposed below the first floor except 1.83 m (6 ft) of any run shall be permitted to extend below the basement ceiling to connect to a cabinet, outlet box or junction box."

Municipal Code of Chicago § 14E-3-350 Liquidtight flexible metal conduit: Type LFMC.

14E-3-350 Liquidtight flexible metal conduit: Type LFMC. The provisions of Article 350 of NFPA 70 are adopted by reference with the following modifications: 1. Delete subsection 350.10(3). 2. Insert new subsections 350.10(3) through (5) to read: "(3) For the connection of motors and recessed luminaires in a non-plenum ceiling (4) In lengths not exceeding 1.8 m (6 ft) between junction boxes for branch circuits in concealed work fished into existing walls, partitions, floors, or hard surface ceilings where other work does not require or include removal of the existing finished surface (5) For required flexibility at the terminations of conduit runs." 3. Insert new subsections 350.12(3) through (7) to read: "(3) In hoistways, other than as permitted in 620.21(A)(1) (4) In storage battery rooms (5) In any hazardous (classified) location except as permitted by other articles in this Code (6) Where exposed to materials having a deteriorating effect on the installed conductors, such as oil or gasoline (7) Underground or embedded in poured concrete or aggregate"

Municipal Code of Chicago § 14E-3-352 Rigid polyvinyl chloride conduit: Type PVC.

14E-3-352 Rigid polyvinyl chloride conduit: Type PVC. The provisions of Article 352 of NFPA 70 are adopted by reference with the following modifications: 1. Revise section 352.10 to read: "Uses Permitted. The use of PVC conduit shall be permitted in accordance with 352.10(A) through (F). Informational Note: Extreme cold may cause some nonmetallic conduits to become brittle and, therefore, more susceptible to damage from physical contact. (A) Corrosive Influences. PVC conduit shall be permitted in locations subject to severe corrosive influences as covered in 300.6 and where subject to chemicals for which the materials are specifically approved. (B) Cinders. PVC conduit shall be permitted in cinder fill. (C) Wet Locations. PVC conduit shall be permitted in portions of dairies, laundries, canneries, or other wet locations, and in locations where walls are frequently washed, the entire conduit system, including boxes and fittings used therewith, shall be installed and equipped so as to prevent water from entering the conduit. All supports, bolts, straps screws, and so forth, shall be of corrosion-resistant materials or be protected against corrosion by approved corrosion-resistant materials. (D) Underground Installations. For underground installations, PVC conduit shall be permitted for direct burial and underground encased in concrete. See 300.5 and 300.50. (E) Support of Conduit Bodies. PVC conduit shall be permitted to support nonmetallic conduit bodies not larger than the largest trade size of an entering raceway. These conduit bodies shall not support luminaires or other equipment and shall not contain devices other than splicing devices as permitted by 110.14(B) and 314.16(C)(2). (F) Insulation Temperature Limitations. Conductors or cables rated at a temperature higher than the listed temperature rating of PVC conduit shall be permitted to be installed in PVC conduit, provided the conductors or cables are not operated at a temperature higher than the listed temperature rating of the PVC conduit." 2. Revise section 352.12 by inserting subsection (F) to read: "In areas not specifically permitted in 352.10." (Amend Coun. J. 11-8-17, p. 59720, § 17; Amend Coun. J. 1-23-19, p. 94952, Art. I, § 19)

Municipal Code of Chicago § 14E-3-353 High density polyethylene conduit: Type HDPE conduit.

14E-3-353 High density polyethylene conduit: Type HDPE conduit. The provisions of Article 353 of NFPA 70 are adopted by reference without modification.

Municipal Code of Chicago § 14E-3-354 Nonmetallic underground conduit with conductors: Type NUCC.

14E-3-354 Nonmetallic underground conduit with conductors: Type NUCC. The provisions of Article 354 of NFPA 70 are adopted by reference without modification.

Municipal Code of Chicago § 14E-3-355 Reinforced thermosetting resin conduit: Type RTRC.

14E-3-355 Reinforced thermosetting resin conduit: Type RTRC. The provisions of Article 355 of NFPA 70 are adopted by reference with the following modification: 1. Revise section 355.10 to read: "Uses Permitted. The use of RTRC shall be permitted in accordance with 355.10(A) through (F). (A) Corrosive Influences. RTRC shall be permitted in locations subject to severe corrosive influences as covered in 300.6 and where subject to chemicals for which the materials are specifically approved. (B) Cinders. RTRC shall be permitted in cinder fill. (C) Wet Locations. RTRC shall be permitted in portions of dairies, laundries, canneries, or other wet locations, and in locations where walls are frequently washed, the entire conduit system, including boxes and fittings used therewith, shall be installed and equipped so as to prevent water from entering the conduit. All supports, bolts, straps screws, and so forth, shall be of corrosion-resistant materials or be protected against corrosion by approved corrosion-resistant materials. (D) Underground Installations. For underground installations, see 300.5 and 300.50. (E) Support of Conduit Bodies. RTRC shall be permitted to support nonmetallic conduit bodies not larger than the largest trade size of an entering raceway. These conduit bodies shall not support luminaires or other equipment and shall not contain devices other than splicing devices as permitted by 110.14(B) and 314.16(C)(2). (F) Insulation Temperature Limitations. Conductors or cables rated at a temperature higher than the listed temperature rating of RTRC conduit shall be permitted to be installed in PVC conduit, provided the conductors or cables are not operated at a temperature higher than the listed temperature rating of the RTRC conduit." (Amend Coun. J. 11-8-17, p. 59720, § 18)

Municipal Code of Chicago § 14E-3-356 Liquidtight flexible nonmetallic conduit: Type LFNC.

14E-3-356 Liquidtight flexible nonmetallic conduit: Type LFNC. The provisions of Article 356 of NFPA 70 are not adopted.

Municipal Code of Chicago § 14E-3-358 Electrical metallic tubing: Type EMT.

14E-3-358 Electrical metallic tubing: Type EMT. The provisions of Article 358 of NFPA 70 are adopted by reference with the following modification: 1. Insert the following language at the end of section 258.12: "(3) For enclosing service entrance conductors"

Municipal Code of Chicago § 14E-3-360 Flexible metallic tubing: Type FMT.

14E-3-360 Flexible metallic tubing: Type FMT. The provisions of Article 360 of NFPA 70 are adopted by reference with the following modifications: 1. Revise subsections 360.10(1) through (4) to read: "(1) Branch circuits not exceeding 20 amperes and 300 volts to ground (2) As permitted in 300.22(C) (3) Connection between a junction box and a single luminaire (4) Connection between a junction box and speakers or similar equipment requiring flexibility" 2. Insert new subsection 360.12(7) to read: "(7) Other than as specifically permitted in 360.10"

Municipal Code of Chicago § 14E-3-366 Metallic auxiliary gutters.

14E-3-366 Metallic auxiliary gutters. The provisions of Article 366 of NFPA 70 are adopted by reference with the following modifications: 1. Revise the title of Article 366 to read "Metallic Auxiliary Gutters." 2. Revise section 366.1 to read: "Scope. This article covers the use, installation, and construction requirements of metal auxiliary gutters and associated fittings." 3. Revise section 366.2 by deleting the definition of "Nonmetallic Auxiliary Gutter." 4. Delete section 366.6. 5. Delete subsection 366.10(B). 6. Delete subsection 366.22(B). 7. Delete subsection 366.23(B). 8. Delete subsection 366.30(B). 9. Delete section 366.120.

Municipal Code of Chicago § 14E-3-368 Busways.

14E-3-368 Busways. The provisions of Article 368 of NFPA 70 are adopted by reference with the following modifications: 1. Revise section 368.12, by adding a new subsection (F) to read: "(F) Sprinklers. In rooms or areas where an automatic sprinkler system is installed which, when activated, would cause water to come into contact with the busway. Exception: Busway that is listed as weatherproof or raintight shall be permitted in locations with sprinkler protection." 2. Revise subsection 368.56, by deleting items 1, 2, 8, 9, 10, 12, 14, and 16. (Amend Coun. J. 11-8-17, p. 59720, § 19)

Municipal Code of Chicago § 14E-3-374 Cellular metal floor raceways.

14E-3-374 Cellular metal floor raceways. The provisions of Article 374 of NFPA 70 are adopted by reference without modification.

Municipal Code of Chicago § 14E-3-376 Metal wireways.

14E-3-376 Metal wireways. The provisions of Article 376 of NFPA 70 are adopted by reference with the following modification: 1. Revise section 376.12 by inserting new items (3) and (4) to read: "(3) For service entrance conductors (4) Above suspended ceilings"

Municipal Code of Chicago § 14E-3-380 Multi-outlet assembly.

14E-3-380 Multi-outlet assembly. The provisions of Article 380 of NFPA 70 are adopted by reference with the following modification: 1. Revise section 380.12 item (3) to read: "(3) Where the voltage is 300 volts or more between conductors"

Municipal Code of Chicago § 14E-3-384 Strut-type channel raceway.

14E-3-384 Strut-type channel raceway. The provisions of Article 384 of NFPA 70 are adopted by reference with the following modification: 1. Revise section 384.10 by inserting new item (8) to read: "(8) Where the voltage is 600 volts or less."

Municipal Code of Chicago § 14E-3-386 Surface metal raceways.

14E-3-386 Surface metal raceways. The provisions of Article 386 of NFPA 70 are adopted by reference with the following modification: 1. Revise section 386.12 by inserting new item (6) to read: "(6) In any hazardous (classified) location"

Municipal Code of Chicago § 14E-3-392 Cable trays.

14E-3-392 Cable trays. The provisions of Article 392 of NFPA 70 are adopted by reference with the following modifications: 1. Revise the informational note to section 392.1 to read: "Informational Note: For further information on cable trays, see ANSI/NEMA-VE 1-2009, Metal Cable Tray Systems; and NECA/NEMA 105-2015, Standard for Installing Metal Cable Tray Systems." 2. Revise section 392.10, including table 392.10(A), to read: "(A) Uses Permitted. Metal cable tray shall be permitted to be used as: (1) A support system for ac or dc power conductors 50 volts or less (2) For communications circuits, control circuits, and signaling circuits. (3) A support system for the wiring methods in Table 392.10(A), under the conditions described in their respective articles and sections. Table 392.10(A) Wiring Methods Wiring Method | Article/Chapter Wiring Method | Article/Chapter Electrical metallic tubing: Type EMT | 358 Instrumentation tray cable: Type ITC | 727 Intermediate metal conduit: Type IMC | 342 Mineral-insulated, metal-sheathed cable: Type MI | 332 Multipurpose and communications cables | Chapter 8 Optical fiber cables | 770 Other factory-assembled, multiconductor control, signal, or power cables that are specifically approved for installation in cable trays | Power-limited tray cable | 725 Rigid metal conduit: Type RMC | 344 (B) Hazardous (Classified) Locations. Cable trays in hazardous (classified) locations shall contain only the cable types and raceways permitted by other articles in this Code." 3. Revise subsection 392.12 to read: "Uses Not Permitted. Cable tray systems shall not be used in the following: (1) Hoistways (2) Where subject to severe physical damage (3) Ducts and other spaces for environmental air subject (plenums) subject to 300.22 (4) As a support system for ac or dc power conductors over 50 volts"

Municipal Code of Chicago § 14E-3-393 Low-voltage suspended ceiling power distribution systems.

14E-3-393 Low-voltage suspended ceiling power distribution systems. The provisions of Article 393 of NFPA 70 are not adopted.

Municipal Code of Chicago § 14E-3-394 Concealed knob-and-tube wiring.

14E-3-394 Concealed knob-and-tube wiring. The provisions of Article 394 of NFPA 70 are adopted by reference without modification.

Municipal Code of Chicago § 14E-3-396 Messenger-supported wiring.

14E-3-396 Messenger-supported wiring. The provisions of Article 396 of NFPA 70 are adopted by reference without modification.

Municipal Code of Chicago § 14E-3-399 Outdoor overhead conductors over 1,000 volts.

14E-3-399 Outdoor overhead conductors over 1,000 volts. The provisions of Article 399 of NFPA 70 are adopted by reference without modification.
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2669805Fetched: 10/24/2026

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