§ 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"