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Does NM Clamp exist for this situation?

9K views 39 replies 14 participants last post by  brric 
#1 ·
Hello,

I'm hoping that someone can provide a suggestion for a NM clamp that will work in this situation. This metal conduit is going to a ceiling fixture. I'm looking for a method to secure the cable as it enters the box.

I attached a picture to illustrate. Thank you in advance.
 

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#7 ·
This is a very short run of EMT, maybe 6' of metal conduit and it's 3/4" ... The cable is clamped as it leaves the wall, but I was hoping to secure it at the box too. I'm aware of the debate about romex in conduit, but I was unaware this was a violation. My only other alternative is to tear down my ceiling and drill through a number of cross beams.
 
#10 ·
This is a very short run of EMT, maybe 6' of metal conduit and it's 3/4" ... The cable is clamped as it leaves the wall, but I was hoping to secure it at the box too. I'm aware of the debate about romex in conduit, but I was unaware this was a violation. My only other alternative is to tear down my ceiling and drill through a number of cross beams.
I think you are ok. Short sections are allowed by code. As long as the cable is secured where it enters the conduit you are ok.
 
#12 ·
So as long as it's clamped as it enters the conduit, it doesn't need to be secured at the fixture box? It's already been secured where it enters the conduit.
The cable does not need to be secured in the box since that takes place where the cable enters. As long as the transition bushing is inplace you are ok.

As for the box itself this would be a nice compliment against the metal edges:


http://www.homedepot.com/p/Halex-3-...g-4-Pack-27527/100159912?N=5yc1vZbohkZ1z117wk
 
#17 ·
Alls good. I can run it through my dining room.

334.10. In dwelling unit
(A) concealed

334.15 (B) protected from physical damage (emt)
No mention of location or length

(C) is as it applies if just sleeved at the end like down the wall for protection. Pointing out securing it within 12 inches of the conduit. If it is a system box to box no need to secure
 
#32 ·
I'm not exactly sure what kind of fixture I'm putting there yet. It's over where I want a work-bench in the garage. I have a few under consideration and will hopefully settle on something soon. It is a 20amp breaker. I've run a bunch of new receptacles and some new lighting to a new sub-panel. Originally I only had one 15amp receptacle in the entire garage.

I appreciate everyone's input on this.
 
#38 ·
In relation to NM though conduit. I could be completely wrong.

The 2014 NEC Article 334.15 requires NM cable to be sleeved though conduit when necessary to protect the cable from physical damage. Jump-Start specifically quoted 334.15 (c) of that article.

It doesn't specify minimums or maximums for the sleeve. So I guess if you can convince the AHJ that the NM cable in the conduit is being protected from damage as required by Article 334.15, then it is permissible. But do you really want to do enter that gray area with the AHJ?
 
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