Low and high voltage in the same conduit

[don_resqcapt19]

Yeah, I know and we've talked about "rolling your own" before. But the more I think about it I can't see why it wouldn't be. The LV is separated from the line voltage conductors in it's own listed 600V cable assembly.

I might be missing something but I'm not seeing anything that would prohibit it.

-Hal

Because the rule only permits that were the either the power or low voltage conductors are in a non-metallic sheathed cable. The only cable type that you can buy that is listed as having a non-metallic sheath is NM. The language in 725.136 needs to be changed as the jacket on tray cable provides at least as much protection as the jacket on NM.

 

[hbiss]

Because the rule only permits that were the either the power or low voltage conductors are in a non-metallic sheathed cable.

Code section please.

-Hal

 

[don_resqcapt19]

Code section please.
-Hal

I cited the section in my comment.

725.136(I)
(1) Either (a) all of the electric light, power, Class 1, non–power-limited fire alarm and medium-power networkpowered
broadband communications circuit conductors or (b) all of the Class 2 and Class 3 circuit conductors are in a raceway or in metal-sheathed, metal-clad, non–metallic-sheathed, or Type UF cables

 

[hbiss]

336.2 Definition

Power and Control Tray Cable, Type TC. A factory assembly of two or more insulated conductors, with or with-out associated bare or covered grounding conductors, under a nonmetallic jacket.

Seems the NEC gives type TC no respect.

-Hal