Can NM run inside concrete blocks?

[sgr1]

I have an apartment buildings that they are remodeling it is a concrete block building and they are putting a footing and adding a brick shell on the outside. They had the NM run thur the block from the switch to the outside light is that OK code wise?

 

[benaround]

334.12 (2005) (b) says no.

 

[RUWired]

See article 334.10(A)2. You can fish the wires in the voids as long as they don't go and fill them solid with concrete or other simular materials.
Rick

 

[220/221]

Can NM run inside concrete blocks?

I certainly hope so.


It is done every single day here, and it always has been.

 

[benaround]

See article 334.10(A)2. You can fish the wires in the voids as long as they don't go and fill them solid with concrete or other simular materials.
Rick

I agree with Rick, I looked in the not permitted uses first.

 

[Dennis Alwon]

I certainly hope so.


It is done every single day here, and it always has been.

Yeah, but we know about Arizonia's rules.

Is there a dwayne dover electrical inspector where you are at. I know he moved to AZ but not sure where.

 

[benaround]

There is a Bill Dover, I've seen a few of them!

 

[Dennis Alwon]

There is a Bill Dover, I've seen a few of them!

You sure it wasn't Ben Dover...

 

[sparkyway]

Looks like the "maybe's" have it. As stated, its done every day in terms of fishing in open blocks and between bricked areas. As long as its not a wet environment I guess it seems to be acceptable. I would rather run a piece of UF cable there since its pretty much a perfect match and totally within the code descriptions. Tough call if you use NM... no brainer if you use UF.:wink:

 

[sgr1]

Thanks everybody Sparkyway on the UF cable that was what I was thinking just to make sure it was code compliant.

 

[Jim W in Tampa]

UF is fine but not needed. Come to FL we do it every day on block homes. Its not wet maybe damp

 

[macmikeman]

Do it all the time. If it is a retaining wall with dirt on the other side of it, then UF.