3 wires under a staple

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That isn't even the correct thread. :D I thought I was posting in this one which would make more sense. You think you can move it.....:D

I'm getting old. Must have clicked the wrong thread somehow.
 
Considering you where thinking of a post about staples it seems obvious that it would have been in the staple thread.

It happens to all of us here at some point. :D

I click the find all posts by 'iwire' when I can not find a post I made. :smile:
 
I like the 1/2" plastic wire nails. I will put( 2 )12-2 wires under wire nail.
Then use wire ties to tie the next wire to these.
What I like about the plastic wire nails is you are a lot less likely to over-drive.Causeing damage to the wire.
I had a young helper one time that i had to really watch when we were useing the Metal wire staples. So I bought a box of the plastic wire nails,
Liked the results so I have stuck with the Plastic wire-nails.
They cost a little more, but worth it to me.
Cheaper is not always better.
 
I like the 1/2" plastic wire nails. I will put( 2 )12-2 wires under wire nail.
Then use wire ties to tie the next wire to these.
What I like about the plastic wire nails is you are a lot less likely to over-drive.Causeing damage to the wire.
I had a young helper one time that i had to really watch when we were useing the Metal wire staples. So I bought a box of the plastic wire nails,
Liked the results so I have stuck with the Plastic wire-nails.
They cost a little more, but worth it to me.
Cheaper is not always better.
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No issue here BUT if an apprentice cannot get down driving a standard staple to support NM cable, maybe he is in the wrong trade. SERIOUSLY.

I prefer Office Depot just for the record.
 
I personally never go more than 2 under a staple or 2 3 wires, but ive seen it done alot. Im not sure many inspectors pick up on it. If I have more than four wires on a stud I just use stackers.
 
From an inquiry I made of a manufacturer several years ago:

W.W. Cross said:
Marc:
This question has been coming up a lot lately, and we have to be careful how we answer it due to the diversity in code interpretation across the country. UL tested our products for one cable, which is pretty much standard. We are aware however that many contractors run two, 12 or 14 cables under a #100 staple with no problem. The LL# 100 and the LL141 can physically hold even 3 and 4 cables securely, however some inspectors will only allow one cable regardless of leg length and holding capacity. That is why we have to be careful in advertising multi-cable capability.

You are correct that leg length is an important factor in holding capability, but leg design and shape is also important. You will notice that the Viking #100, #125, etc. legs are not round. They are flattened which increases holding ability. A Viking staple will therefore hold better than most round-leg staples.

The solution will probably be for us to request UL or other lab testing for multiple cables, which is expensive and time consuming. In the mean time, we suggest the inspectors be realistic about a staple’s intended purpose “to adequately secure a cable or cables without damaging them”. A simple pull test would seem to be adequate to address this issue. Pull on it and see if it comes out. If it does, you need a bigger staple. If, not, go with it.

If the Inspectors are concerned about “over driving” in order to make the staple hold on multiple cables, one of our insulated staples such as the IN 3000 or IN3125 may be the answer. We have seen sales of IN3125 (based on our #125 staple) increase lately, primarily for this reason.

Finally, Viking is introducing a line of plastic “stacking staples” this fall. These will be designed to hold 1-2 or 3 cables and will be color coded for 10, 12 and 14 cable. They will be more expensive than steel staples but they should address this issue in problem areas.

Hope this helps, we will be happy to supply samples or additional information at your request

Tom Trudeau
President
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peter d said:
I saw an EC install 3 14/2 cables under a regular Briscon SN40I. I was quite impressed, and it even passed inspection.
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The manufacturer even suggests just tugging on it a bit to see if it is secure. If it is, it's fine. Realistically, it only has to work until the drywall is installed.
 
mdshunk said:
The manufacturer even suggests just tugging on it a bit to see if it is secure. If it is, it's fine. Realistically, it only has to work until the drywall is installed.
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I agree, and I won't be so naive to think it's not done all the the time.
 
peter d said:
I agree, and I won't be so naive to think it's not done all the the time.
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I'm not even sure you need a staple. I have already hammered on a scrap piece of wire with a staple, and used that length of scrap wire to secure several romexes. I have secured MC to a metal stud by wrapping the stud with several wraps of Super 33 hold the MC in the middle of the stud. Both methods have passed inspection.
 
The fence staples work great on 3 conductor wire..lol but really about driving the staple too far it will cause over heating on heavy loads at the staple causing a fire
 
firelient said:
...but really about driving the staple too far it will cause over heating on heavy loads at the staple causing a fire
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How is it that you came about this special knowledge? I'm not saying that it won't, but I have yet to read anything that draws a direct line from an overdriven staple to a fire.
 
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