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Joined: Aug 2005
Posts: 4
H
Helicon Offline OP
Junior Member
most guys installing dryer/washer receptacles or even a standard 120v 15a recetacle in a basement first mount a wooden board to a cement wall... is that required by code, or is it legal to install receptacle directly to a concrete wall?

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Joined: Feb 2005
Posts: 361
C
Member
It's not the outlet that is in question, it is the wiring method:
334.12 Uses Not Permitted.
(10) Types NM and NMS. Types NM and NMS cable shall not be used as follows:
d. Where exposed or subject to excessive moisture or dampness

The cement wall *can* be considered to be a "damp" location and be easily tested by taping some plastic to the wall...after a few days moisture may appear on the inside of the plastic.

I don't know about you (or anyone else), but it's a whole lot easier to just slap up a half a 2x4 up on the wall and staple the wire to it than it is to "test" the wall and strap the NM to the cement.


~~ CELTIC ~~
...-= NJ =-...
Joined: Jan 2002
Posts: 1,457
E
Member
You can attach the receptacle to the wall.

Joined: Feb 2005
Posts: 361
C
Member
...but not the wire.


~~ CELTIC ~~
...-= NJ =-...
Joined: Jan 2002
Posts: 1,457
E
Member
The question did not ask about wire but if it did, I would not consider the inside of a concrete basement wall excesively damp under most conditions.

[This message has been edited by Electricmanscott (edited 01-03-2006).]

Joined: Aug 2005
Posts: 251
T
Member
You guys just run wire down the wall?

We use this stuff called EMT works great. Throw some 10-3 down that bad boy and its done before you even find your 2x4.

[This message has been edited by Trick440 (edited 01-12-2006).]


Shake n Bake
Joined: Jun 2005
Posts: 821
S
Member
Using wood is the cheapest way of doing for sure, but I prefer doing it in pipe too. It looks more professional and the NM is w/o a doubt protected from physical damage. I can consider that an important thing to do, especially any receptacle operating at 220 volts in an unfinished basement!

Joined: Jul 2004
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G
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I'm not even sure wood is the cheapest way ... if you buy the wood.


Greg Fretwell

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