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NMB stapling on metal truss gussets

BreeStephany

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May 19, 2012
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Oregon
I consider myself pretty knowledgeable on current NEC code, as I am preparing to take my master's license test very soon, but found myself in an interesting discussion with a coworker who is running a job I was helping at.

The issue they brought up was that there were several locations where I secured NMB cable with staples through the holes of truss gussets where the wire was running parallel with the truss and was being secured to the side of the web.

They said it was a "code violation " and that staples could be secured on either side of the metal gusset but not directly to the gusset.

I reviewed NEC 334 multiple times, especially 334.30 and was unable to come up with anywhere in current code that says that this is a violation. I understand their reasoning, citing that it has a higher potential for damage over time as the trusses shift and move, but do not see where it is directly prohibited from being done.

This is not to say that the AHJ / inspector might not allow it, but I wanted to pick the brains of the good sparkys of GarageJournal and see if I missed something in NEC that prohibits this?

I know that NMB cannot be run across the edges the gussets and pinch points of trusses, as this makes the NMB subject to damage, but have never had a problem with stapling to the truss gussets.

Would love to know peoples thoughts!
 
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sparky 1971

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Oct 9, 2018
Messages
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Central Iowa
I consider myself pretty knowledgeable on current NEC code, as I am preparing to take my master's license test very soon, but found myself in an interesting discussion with a coworker who is running a job I was helping at.

The issue they brought up was that there were several locations where I secured NMB cable with staples through the holes of truss gussets where the wire was running parallel with the truss and was being secured to the side of the web.

They said it was a "code violation " and that staples could be secured on either side of the metal gusset but not directly to the gusset.

I reviewed NEC 334 multiple times, especially 334.30 and was unable to come up with anywhere in current code that says that this is a violation. I understand their reasoning, citing that it has a higher potential for damage over time as the trusses shift and move, but do not see where it is directly prohibited from being done.

This is not to say that the AHJ / inspector might not allow it, but I wanted to pick the brains of the good sparkys of GarageJournal and see if I missed something in NEC that prohibits this?

I know that NMB cannot be run across the edges the gussets and pinch points of trusses, as this makes the NMB subject to damage, but have never had a problem with stapling to the truss gussets.

Would love to know peoples thoughts!
I won't say if it's actually a violation or not, but I can say that I've done it hundreds of times and it's never been an issue with an inspection.
 
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BreeStephany

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Joined
May 19, 2012
Messages
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Location
Oregon
I won't say if it's actually a violation or not, but I can say that I've done it hundreds of times and it's never been an issue with an inspection.
Same here, had lots of inspections on big custom homes and multi-family buildings without an issue.

I just think my coworker doesn't like doing it, and they are running the job, so I operate by their rules... just had to staple on either side of the gussets and pull the staple on the gusset, so an easy and quick fix!
 

sparky 1971

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Messages
8,112
Location
Central Iowa
Same here, had lots of inspections on big custom homes and multi-family buildings without an issue.

I just think my coworker doesn't like doing it, and they are running the job, so I operate by their rules... just had to staple on either side of the gussets and pull the staple on the gusset, so an easy and quick fix!
As much as I would love to shut my business down and go back to work for someone, it's things like that that keep my on my own.
 
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sparky 1971

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Somewhere in the Urban Legend Code.
I remember it now. It's right after the part where the ground prong has to be up and right before 20 amp circuits require 20 amp receptacles. The same page that tells us that a 5 HP motor needs to have #6 wire since a 60 amp breaker can be used. I need to read that book again.
 

Norcal

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Mar 16, 2008
Messages
13,784
I remember it now. It's right after the part where the ground prong has to be up and right before 20 amp circuits require 20 amp receptacles. The same page that tells us that a 5 HP motor needs to have #6 wire since a 60 amp breaker can be used. I need to read that book again.
Forgot not allowed to use wirenuts in panels. :LOL:
 
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