NEC and Ty-Raps

Old 09-20-16, 09:07 PM
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NEC and Ty-Raps

Does the NEC allow the use of Ty-Raps to bundle Romex cables for neatness?
Old 09-21-16, 03:17 AM
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No prohibition, but remember cables must be secured to framing 8" from a box and every 4 1/2' thereafter, so if bundled, you need to figure a way to do that securely without over crowding the clamp. There are wire or cable looms that attach to the studs that will allow the cables to be "loomed" in a neat fashion, but I just can't find a picture or link right now. 3M calls them Stak-its.

Bundling cables can cause ampacity adjustment issues. How many cables are you thinking about bundling?

Last edited by pcboss; 09-21-16 at 05:46 PM. Reason: 4 1/2' was 3', added note
Old 09-21-16, 06:01 AM
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I think this is what Larry is referring to:

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Keep in mind that if you bundle multiple romex tightly together for more than a foot or two you have to derate the cable ampacity. That's why the stackers space the cables apart somewhat.

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