NM cable in crawlspace

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Old 03-21-19, 05:07 PM
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NM cable in crawlspace

Question:

If I run NM cable parallel to the floor joist, would it go on the side or bottom of the joist?
(see my attached photo, should I do the green or blue way?)

https://imgur.com/M4rFD8h

And what's the best way to organize multiple wires (up to 8) when running parallel to a joist?

Much appreciated, thanks
 
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Old 03-21-19, 06:40 PM
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Follow the blue line. Use something like the 3M Stak-its for multiple cables.
 
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Old 04-08-19, 07:02 AM
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pcboss:

Can you use nm cable stackers in a parellel fashion, along the inside run of floor joist?

I've only seen this use to route wires up and down walls, not in a sideways orientation.

I wonder how much wire could potentially sag.

thx
 
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Old 04-08-19, 07:06 AM
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You can use them horizontally in floor joist spaces. Code maximum is 4' 6" spacing between clips, but you can use them closer together if you have too much sag in the cables.
 
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Old 04-08-19, 10:01 AM
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Awesome, thanks for the info.

What about using cable stackers on running boards?

I need to run wires perpendicular to floor joists in an unfinished basement. I was planning on using running board to staple the NM cable.

I came across this video (to to the 10:00 mark and look at the ceiling):
https://www.youtube.com/watch?v=O4HJ...kJryNkta0K9JlM

Can cable stackers be used in this fashion to replace staples?

thanks!
 
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Old 04-08-19, 10:29 AM
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My opinion is that you can use stackers anywhere you can use standard staples. That's how the manufacturer sells them as compliant with article 300 requirement for fastening NM cable. I haven't seen any code or directive against that. The cable routing in that video looks OK to me for a basement utility room.
 
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Old 04-08-19, 10:40 AM
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Excellent, thanks so much!
 
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