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#195248 - 07/21/10 06:42 PM Contactor in a pull box
wewire2 Offline
Member

Registered: 11/14/02
Posts: 246
Loc: California
Is there a code provision that prevents the use of a 3R pullbox to enclose a 480V. 3 pole contactor? I need to order this ASAP and can't find anything on it.

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#195249 - 07/21/10 06:57 PM Re: Contactor in a pull box [Re: wewire2]
Yoopersup Offline
Member

Registered: 03/04/03
Posts: 826
Loc: Michigan
Is this being used also as a pull box?? Or just a 3 R junction box being used to enclose the Contactor?? If its the latter then I;d say its done all the time.

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#195255 - 07/22/10 05:57 AM Re: Contactor in a pull box [Re: Yoopersup]
renosteinke Offline
Cat Servant
Member

Registered: 01/22/05
Posts: 5300
Loc: Blue Collar Country
I've done it as a mater of routine .... but some folks have run into issues with their AHJ - who wants a hinged door.

IMO, there's no code issue, and trying to apply 'listing and labeling' is quite a stretch. Heck, I've even had folks object to cutting holes in the boxes, rather than using the factory KO's. Go figure.

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#195257 - 07/22/10 06:25 AM Re: Contactor in a pull box [Re: renosteinke]
HotLine1 Offline

Member

Registered: 04/03/02
Posts: 6786
Loc: Brick, NJ USA
As Reno said, it's routine. Contactors/relays in NEMA1 are also routine (in compliant locations) as using any other enclosure.

Could the issue be the 'opinion' that the complete assembly is not 'listed/labeled'? Or could there be an issue with conductor volume, or bend radius?
_________________________
John

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#195261 - 07/22/10 02:31 PM Re: Contactor in a pull box [Re: HotLine1]
wewire2 Offline
Member

Registered: 11/14/02
Posts: 246
Loc: California
It's just that I had an inspector in the LA area tell me I couldn't enclose a contactor in a pull box because the box wasn't listed for that use. It was a long time ago and I never did find the code section. I guess it doesn't exist.
Thanks for the help!

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#195265 - 07/22/10 07:59 PM Re: Contactor in a pull box [Re: wewire2]
HotLine1 Offline

Member

Registered: 04/03/02
Posts: 6786
Loc: Brick, NJ USA
OK, try this scenario...

Enclosure has a UL label/listing as a pull or junction box, based on the UL White Book? If that is/was the case then by the 'book' he's technically correct.

Did the enclosure you used have a backplate? Mounting studs?

Did you have a Sq D (or other mfg) that has a 'factory' enclosure in their catalog?

From your last post, sounds like that AHJ may have had a UL White Book with him
_________________________
John

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#195269 - 07/22/10 09:32 PM Re: Contactor in a pull box [Re: HotLine1]
wewire2 Offline
Member

Registered: 11/14/02
Posts: 246
Loc: California
It was just a regular pull box with the contactor mounted using tech screws. I see what you're getting at though. If there is a specific box made for that contactor then it seems
reasonable that the inspector would want the approved box to be used. In this case I'm looking at a 5 day lead time if I want it in a specialized contactor box. Uhggg!!

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#195277 - 07/23/10 06:23 AM Re: Contactor in a pull box [Re: wewire2]
HotLine1 Offline

Member

Registered: 04/03/02
Posts: 6786
Loc: Brick, NJ USA
We:

"mounted using tech screws" ??

That could have been a factor.
_________________________
John

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#195280 - 07/23/10 12:06 PM Re: Contactor in a pull box [Re: HotLine1]
wewire2 Offline
Member

Registered: 11/14/02
Posts: 246
Loc: California
I have one of those Greenlee tap kits now. Boy those are sure nice with the all in one drill and tap.

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#195281 - 07/23/10 12:57 PM Re: Contactor in a pull box [Re: wewire2]
gfretwell Offline

Member

Registered: 07/20/04
Posts: 9012
Loc: Estero,Fl,usa
What is the code issue with tek screws?
_________________________
Greg Fretwell

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