UL listing required for concrete pull boxes?

[bfro]

One of my clients posed this question.

Are concrete pull boxes (outdoor/underground) required to be U.L. listed?

Another electrical engineer has told him that they are and if they are not he needs to install a U.L. listed box inside the concrete pull box.

Any thoughts?

 

[don_resqcapt19]

Re: UL listing required for concrete pull boxes?

Handholes are covered by Article 314. I don't find a requirement that they be a listed product.
Don

 

[ryan_618]

Re: UL listing required for concrete pull boxes?

They make UL listed concrete handhole enclosures. I know that, like Don said, the NEC doesn't require listing of them. OSHA, on the other hand, would require it in a commercial building I am led to beleive.

 

[tom baker]

Re: UL listing required for concrete pull boxes?

I've not seen any listed concrete handhole enclosures. there is one company that makes a UL listed composite box.

 

[sandsnow]

Re: UL listing required for concrete pull boxes?

Concrete handholes and vaults have been around forever and never been listed. I don't know of any problems with them in the past when installed correctly.

Unfortunately, once a manufacturer gets something listed, then it magically becomes "required" in many persons eyes.

 

[pierre]

Re: UL listing required for concrete pull boxes?

"Unfortunately, once a manufacturer gets something listed, then it magically becomes "required" in many persons eyes."

Larry
Well said, isn't that how so many "myths" in our industry get started?

 

[Jeff Coggins]

Re: UL listing required for concrete pull boxes?

QUAZITE BOXES ARE U.L. LISTED UNDER STRONGWELL CORP UL LISTING # E190048 DATED 2-17-2000