- Location
- New Jersey
- Occupation
- Journeyman Electrician (retired)
Would this type of box violate 314.43?
Article 314.43
- Thread starter infinity
- Start date
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hurk27
Senior Member
- Location
- Portage, Indiana NEC: 2008
Re: Article 314.43
No as the screws do not pass through the box. As was said in another thread it is the sharp threads of the screw inside of the box that is a concern because the insulation on wires can be damaged by these threads.
No as the screws do not pass through the box. As was said in another thread it is the sharp threads of the screw inside of the box that is a concern because the insulation on wires can be damaged by these threads.
- Location
- New Jersey
- Occupation
- Journeyman Electrician (retired)
Re: Article 314.43
The reason that I brought this up was because I vaguely recall a conversation where it was suggested that the metal screw could become energized since it isn't grounded.
The reason that I brought this up was because I vaguely recall a conversation where it was suggested that the metal screw could become energized since it isn't grounded.
hurk27
Senior Member
- Location
- Portage, Indiana NEC: 2008
Re: Article 314.43
If it did become energized the only way a person could come into contact with the screw would be with the cover plate removed which would expose the energized device screws anyway, But the only concern I see is that a energized screw in full contact with the wood would cause pyro-carbonization of the wood if a grounded metal something was also in contact with the wood in close proximity to this screw. (like a copper water pipe on the opposite side of the stud)
A closer look at the box has revealed that the screw heads when tightened down recess the screw heads into a boss of plastic that would prevent any wire insulation from being damaged by the screw heads. If we are worried that a wire might come loose and make contact, well It should have been installed properly in the first place but the NEC is not about "what ifs".
If it did become energized the only way a person could come into contact with the screw would be with the cover plate removed which would expose the energized device screws anyway, But the only concern I see is that a energized screw in full contact with the wood would cause pyro-carbonization of the wood if a grounded metal something was also in contact with the wood in close proximity to this screw. (like a copper water pipe on the opposite side of the stud)
A closer look at the box has revealed that the screw heads when tightened down recess the screw heads into a boss of plastic that would prevent any wire insulation from being damaged by the screw heads. If we are worried that a wire might come loose and make contact, well It should have been installed properly in the first place but the NEC is not about "what ifs".
electricmanscott
Senior Member
- Location
- Boston, MA
- Occupation
- Massachusetts Master Electrician, one man show.
Re: Article 314.43
I do see your point but the mounting screw sits in a slight recess when installed which would address the issue.
No. One of a great number of products from Arlington.
I do see your point but the mounting screw sits in a slight recess when installed which would address the issue.
electricmanscott
Senior Member
- Location
- Boston, MA
- Occupation
- Massachusetts Master Electrician, one man show.
Re: Article 314.43
I think you are thinking about 314.23 (B) (1)Originally posted by hurk27:
No as the screws do not pass through the box. As was said in another thread it is the sharp threads of the screw inside of the box that is a concern because the insulation on wires can be damaged by these threads.
mdshunk
Senior Member
- Location
- Right here.
Re: Article 314.43
On a related note, these Arlington "One Box's" are easier to use than the similar "Smart Box", made by another manufacturer. The cables are easier to get into the box.
Just passin' that along...
On a related note, these Arlington "One Box's" are easier to use than the similar "Smart Box", made by another manufacturer. The cables are easier to get into the box.
Just passin' that along...
hurk27
Senior Member
- Location
- Portage, Indiana NEC: 2008
Re: Article 314.43
What I get for not looking it up
Infinity
in 314.43 it clearly allows the recess that hides the screw heads to be allowed to use screws inside of the box.
Yep I was
What I get for not looking it up Infinity
in 314.43 it clearly allows the recess that hides the screw heads to be allowed to use screws inside of the box.
electricmanscott
Senior Member
- Location
- Boston, MA
- Occupation
- Massachusetts Master Electrician, one man show.
Re: Article 314.43
22.5 cu in is better too.
I shall be switching to these.
22.5 cu in is better too.
JohnE
Senior Member
- Location
- Milford, MA
- Occupation
- Electrical Contractor, Inspector
Re: Article 314.43
I agree. I've been meaning to pick some up, but haven't yet. The smartbox is difficult to get wires into.
- Location
- Windsor, CO NEC: 2023
- Occupation
- Hospital Master Electrician
Re: Article 314.43
That box looks awesome.
That box looks awesome.
- Status