wiring in crawl space

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pope

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Re: wiring in crawl space

which exact article in 334 is it? and also, are you going by the 1999 code book?
 
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pope

Member
Re: wiring in crawl space

where does it say that romex has to run parallel with framing in a crawl space??
 
iwire

iwire

Moderator
Staff member
Location
Massachusetts
Re: wiring in crawl space

334.15 Exposed Work.
In exposed work, except as provided in 300.11(A), the cable shall be installed as specified in 334.15(A) through (C).

(A) To Follow Surface. The cable shall closely follow the surface of the building finish or of running boards.
 
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pope

Member
Re: wiring in crawl space

but it doesnt say parallel with framing it says running close to building finish.
 
iwire

iwire

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Staff member
Location
Massachusetts
Re: wiring in crawl space

Do you know a way to closely follow the building surface without running parallel to the framing or installing a running board?
 
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big john

Senior Member
Location
Portland, ME
Re: wiring in crawl space

I always thought 334.15(C) applied to crawl-spaces, but I'm thinking "unfinished basement" isn't the same as "crawl space".

I've seen a lot of places pass inspection were all the crawl-space wiring was run on the bottom of floor joists. Maybe 334.15(A) is wide open to interpretation? :confused:

-John
 
peter d

peter d

Senior Member
Location
New England
Re: wiring in crawl space

Originally posted by big john:
I always thought 334.15(C) applied to crawl-spaces, but I'm thinking "unfinished basement" isn't the same as "crawl space".
Click to expand...
The NEC does make a distinction between basements and crawlspaces in 210.8 (A)(4) and (5).

I don't see how NM cable can be fastened to the bottom of joists in a crawl space and be in compliance with 334.15(A). Either it has to follow the surface of the building finish (running parallel to a joist) or be mounted on a running board.
 
George Stolz

George Stolz

Moderator
Staff member
Location
Windsor, CO NEC: 2017
Occupation
Service Manager
Re: wiring in crawl space

Originally posted by pope:
but parallel to joists the wire is not exposed.
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Pope, there comes a point where you must take a deep breath, accept the red tag, and nail up 2x4's to protect the cables and pass inspection. :D

Can you reach out and touch it without breaking a wall down? Then it's exposed.
Click to expand...
I agree with Peter.
 
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pope

Member
Re: wiring in crawl space

this is not about an inspection i just dont see where it explains well about wiring in a crawl space .
 
peter d

peter d

Senior Member
Location
New England
Re: wiring in crawl space

Originally posted by pope:
this is not about an inspection i just dont see where it explains well about wiring in a crawl space .
Click to expand...
It doesn't need to explain every possible situation. 334.15 "Exposed Work" covers all the possibilities where NM cable will be run exposed.
 
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pope

Member
Re: wiring in crawl space

a running board would be nailed to the bottom of the floor joist what kind of damaged could happen to the wiring in the crawl space.
 
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