Running Board Requirements
I've searched around and checked where I could think of in the NEC. Are
there any particular requirements for the size/composition for crawlspace running boards? I'm rewiring my entire house (built in 1940s, rewired by a previous owner - its a NIGHTMARE!) I've seen recommendations to use 2x4s. Is this a requirement, or preference? What about using something smaller? |
Running Board Requirements
On Oct 31, 10:30 pm, wrote: I've searched around and checked where I could think of in the NEC. Are there any particular requirements for the size/composition for crawlspace running boards? I'm rewiring my entire house (built in 1940s, rewired by a previous owner - its a NIGHTMARE!) I've seen recommendations to use 2x4s. Is this a requirement, or preference? What about using something smaller? There is no requirement that you even USE "running boards". I assume you are running cable and not pipe? The only thing the NEC requires is that the cable be "adequately supported", using staples or clips "listed" for the application. As a rule, support romex every 4 feet, and stretch it tight so that there are no sags or loops. Hope this helps! Glenn Grundberg http://www.goalelectrical.com |
Running Board Requirements
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Running Board Requirements
On Wed, 01 Nov 2006 11:59:20 GMT, (Doug Miller)
wrote: In article . com, wrote: On Oct 31, 10:30 pm, wrote: I've searched around and checked where I could think of in the NEC. Are there any particular requirements for the size/composition for crawlspace running boards? I'm rewiring my entire house (built in 1940s, rewired by a previous owner - its a NIGHTMARE!) I've seen recommendations to use 2x4s. Is this a requirement, or preference? What about using something smaller? There is no requirement that you even USE "running boards". I assume you are running cable and not pipe? The only thing the NEC requires is that the cable be "adequately supported", using staples or clips "listed" for the application. As a rule, support romex every 4 feet, and stretch it tight so that there are no sags or loops. Article 334.15(C) specifically requires running boards when installing NM cable smaller than #6 across joists in an unfinished basement. Whether this applies to crawl spaces as well, the Code doesn't appear to specify, but I think I'd want to check that out with the local electrical inspector first. |
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