Securing NM running through joists in unfinished garage


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Old 05-18-15, 02:23 PM
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Securing NM running through joists in unfinished garage

I'm putting in a sub-panel and running 6/3 NM through the joists to the panel location on the opposite side of the garage. The garage/basement is ground level and unfinished.

I'm curious to know if there is a limit the the length of the run? It looks like it will be approx 50' perpendicular to the joist, then will run 5-ish feet on both ends along each joist.

Additionally, other than staples on the parallel joist runs, is there a way I should be securing the NM when it's going through the joists? Or does the parallel run with staples on each end do the job?

Thanks.
 
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Old 05-18-15, 03:34 PM
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Staples are the preffered method of supporting/ securing cables, but any fitting that is listed for the purpose is fine. Cable that is pulled through holes drilled in framing members (studs/joists) are considered supported so no additional support is needed. When run parallel to the joists NM cable is required to be supported/secured every 4 1/2' minimum. There is no limit of length of run, unless it creates too much voltage drop which yours is no where near of having.
 
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Old 05-18-15, 11:13 PM
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Perfect. Thanks for the info.
 
 

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