unlisted material

mannyb

Senior Member
I walked a job today to install some conduit for a machine. I noticed that other electrical equipment had hand fabricated some floor mounted wire way out of sheet metal with rivets across the floor. They basically ran it a speed bump with 2 sides the wire sits on the cement floor and they ran wiring through it to equipment. The also had home made fabricated pull boxes with hinges and latched doors. Wouldnt the raceway and or enclosure need to be UL listed?? The work looked pretty good but I wouldnt think it was well bonded and they didnt even run a ground wire with cicruit to equipment.
 

tom baker

First Chief Moderator
Staff member
Listing is probably required, you can look in the appropriate code article, not everything is required to be listed. An EGC is a must
Probably no permit or inspection.
 

mannyb

Senior Member
I was just curious. The installation looked great but I was a little concerned being that the existing equipment was 480v 3ph and at some points along the construction of the wireway the rivets in sheet metal were the only thing bonding each section. The new installation we are doing will be conduit I was just curious about the existing equipment. I will say 80% of existing equipment in existing building isnt installed to code and not all of businesses care that it is, they just want it to work but as contractors and trades people we have requirements we must follow. I cant find anthing in code about construction of NEMA products only that if I install it, it has to be listed. 110.2 and 110.3.


Thanks for help.
 

petersonra

Senior Member
Location
Northern illinois
Occupation
engineer
Where in the code does it say anything about type 1 metal enclosures being required to be listed? It says non-metallic boxes have to be listed among other things.
 

Another C10

Electrical Contractor 1987 - present
Location
Southern Cal
Occupation
Electrician NEC 2020
they just want it to work but as contractors and trades people we have requirements we must follow.
Just remember you are the professional, I would not ever use non UL approved Items, simply because of the potential lawsuit in the event someone became injured or worse, you'd be liable. If I ever run across a system that I have to add on to, were the prior work was questionable I make it noted on my invoice that " the work noticed was from others" and that it is suggested to have it replaced ... or if its really bad, I wont even add my work along with the violation, period. I would replace the unsafe first then add the continued request.
 

don_resqcapt19

Moderator
Staff member
Location
Illinois
Occupation
retired electrician
Where in the code does it say anything about type 1 metal enclosures being required to be listed? It says non-metallic boxes have to be listed among other things.
While the code does not require enclosures to be listed unless they are in a wet location, the floor mounted wireway, would be a Surface Metal Raceway and those products are required to be listed.
 

paulengr

Senior Member
In addition to specific equipment listing requirements, per 110.2 equipment is required to be approved by the AHJ. That may mean listed, you would have to check with them.
It never specified if it’s AND or OR. Countless examples exist where NEC Committees are pretty open about giving inspectors the option to approve things not Listed.

If you think about it this makes sense. If a situation calls for modifications that violates Listing but an inspector may allow it if the alternative equals or exceeds the original design. A common example is hard wiring equipment that came with a plug.
 
It never specified if it’s AND or OR. Countless examples exist where NEC Committees are pretty open about giving inspectors the option to approve things not Listed.

If you think about it this makes sense. If a situation calls for modifications that violates Listing but an inspector may allow it if the alternative equals or exceeds the original design. A common example is hard wiring equipment that came with a plug.
That's pretty much what I said. I never said "approved" necessarily meant "listed"
 
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