Securing NM wires entering service panel

[Dontknowjack]

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Response was redundant due to latest rsponse info from op>

I did want to reply that my use of pocket holes instead of toenailing is b/c I do carpentry for fun and I like the security that pocket holes add

 

[user 100]

I did want to reply that my use of pocket holes instead of toenailing is b/c I do carpentry for fun and I like the security that pocket holes add

 

[infinity]

I don't see any confusion, there is a joist above the panel with a horizonal hole and NM cable in the hole. The distance to the panel is less than 12". A support on the cable is still required.

 

[wwhitney]

Is there no product available that could be put in the hole in the joist to make the wire(s) "securely fastened in place by an approved means" there? That would be enough, since the hole in the joist is already less than 12" from the panel.

Heck you could fasten a beveled piece of wood to the face of the joist with its top at the bottom of the hole(s) and staple the wires as they pass over it. Not sure if that would be any easier than the usual 2x4 method already discussed.

How about a cable tie with a screw hole, tighten it around the wire(s) and face screw it to the joist. Would that be an "approved means"?

Cheers, Wayne

 

[romex jockey]

maybe fire caulk....?

~RJ~

 

[al hildenbrand]

I don't see any confusion, there is a joist above the panel with a horizonal hole and NM cable in the hole. The distance to the panel is less than 12". A support on the cable is still required.

Yes. I agree. The "and" in 334.30(A) requires it, in my opinion.

334.30(A) Horizontal Runs Through Holes and Notches. In other than vertical runs, cables installed in accordance with 300.4 shall be considered to be supported and secured where such support does not exceed 1.4-m (41⁄2-ft) intervals and the nonmetallic-sheathed cable is securely fastened in place by an approved means within 300 mm (12 in.) of each box, cabinet, conduit body, or other nonmetallic sheathed cable termination.

What I don't get is why the area of the JOIST below the holes in the joist and above the panel is not used for staples, stackers or Caddy CJ6s (Colorado Jims)?

If there's four inches from the panel top to the joist, then there's about 7-8 inches of joist to attach to.

 

[Dontknowjack]

Yes. I agree. The "and" in 334.30(A) requires it, in my opinion.



What I don't get is why the area of the JOIST below the holes in the joist and above the panel is not used for staples, stackers or Caddy CJ6s (Colorado Jims)?

If there's four inches from the panel top to the joist, then there's about 7-8 inches of joist to attach to.

Holes in the joists are too close to the bottom and not enough wire length to make new holes higher on the joists

 

[al hildenbrand]

Holes in the joists are too close to the bottom and not enough wire length to make new holes higher on the joists

Do you have the required 1-1/4" of joist between the bottom edge of the hole and the bottom face of the joist?

 

[al hildenbrand]

What Wayne said:

How about a cable tie with a screw hole, tighten it around the wire(s) and face screw it to the joist.

 

[wwhitney]

Do you have the required 1-1/4" of joist between the bottom edge of the hole and the bottom face of the joist?

What code calls for only 1-1/4"? The 2015 IRC R502.8.1 calls for 2".

Cheers, Wayne

 

[al hildenbrand]

What code calls for only 1-1/4"?

NEC 300.4(A)(1)

 

[tkb]

I would use a screw gun bracket and cable ties.
It would be quick and easy.

 

[wwhitney]

NEC 300.4(A)(1)

Whoops, that was pretty obvious in retrospect. But in this case the building code is stricter, if you put a hole 1-1/4" from the bottom of the joist, that's not a good move. The hole needs to be at least 2" from either edge of the joist.

Cheers, Wayne

 

[Coppersmith]

I would use a screw gun bracket and cable ties.
It would be quick and easy.

View attachment 19732

:thumbsup: Done this many times.