14E-3-388 Surface nonmetallic raceways.

The provisions of Article 388 of NFPA 70 are not adopted.

14E-3-390 Underfloor raceways.

The provisions of Article 390 of NFPA 70 are adopted by reference without modification.

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
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"

14E-3-393 Low-voltage suspended ceiling power distribution systems.

The provisions of Article 393 of NFPA 70 are not adopted.

14E-3-394 Concealed knob-and-tube wiring.

The provisions of Article 394 of NFPA 70 are adopted by reference without modification.

14E-3-396 Messenger-supported wiring.

The provisions of Article 396 of NFPA 70 are adopted by reference without modification.

14E-3-398 Open wiring on insulators.

The provisions of Article 398 of NFPA 70 are not adopted.

14E-3-399 Outdoor overhead conductors over 1,000 volts.

The provisions of Article 399 of NFPA 70 are adopted by reference without modification.