Wiring through concrete wall

[Sparky Mike]

I'm installing exterior lights on a small commercial building. I was going to use 4" octagons in the block outside and run through the block to the interior. This wall will be poured with concrete. Do I have to put this in EMT?

 

[petersonra]

Re: Wiring through concrete wall

you have to have some kind of raceway unless it is a cable.

 

[steve66]

Re: Wiring through concrete wall

Seems like PVC would also work??

Steve

 

[Sparky Mike]

Re: Wiring through concrete wall

I know I can't run just individual conductors through there...

Sorry, maybe I didn't explain very well.

I just didn't know if it ok to run MC cable through there even thought the inside of the block will be poured.

 

[bphgravity]

Re: Wiring through concrete wall

In general, it can't. See section 330.12(3) and the FPN. You could always sleeve the MC with a suitable raceway.

 

[LarryFine]

Re: Wiring through concrete wall

Since the conduit, etc., will be embedded in concrete, thing of it as a permanent concrete form. You can then feed any approved wiring method through the passageway, whether individual conductors or a cable assembly.

 

[Sparky Mike]

Re: Wiring through concrete wall

So, if I put 1/2" EMT and a 4" octagon, that would be acceptable.