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#115558 - 11/11/03 06:32 PM What is This? ...
Webmaster Offline

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Registered: 10/07/00
Posts: 3142
Loc: NY, USA
 Quote:
The "electrician" decided to convert this 2" EMT LB into some type of 2" EMT LB LL 3/4!

Submitted by;

Scott Griffin
Griffin Electric Co., Inc.
Central New York

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#115559 - 11/12/03 04:17 AM Re: What is This? ...
Electricmanscott Offline
Member

Registered: 01/12/02
Posts: 1478
Loc: Holden, MA USA
This used to be called "Yankee inginuity" now it is a violation.

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#115560 - 11/12/03 06:32 AM Re: What is This? ...
ThinkGood Offline
Member

Registered: 08/07/02
Posts: 1084
Loc: Milwaukee, WI
Extra service charge for a custom installation...

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#115561 - 11/12/03 04:33 PM Re: What is This? ...
crash Offline
Member

Registered: 10/21/03
Posts: 130
Loc: Calgary Canada
I have a question. Does the N.E.C allow splicing in LBs, can it be used as a general purpose junction box?

If yes, then I would call this "use of an LB as a juction box". This would bring up issues of internal box volume and maximum box fill. Removing the cover would probably reveal a code violation in these areas.

If No, then I would call this "modification of electrical equipment".(modifying a 2"LB to a 2"LB,LL3/4")

Does the N.E.C allow modification of electrical equipment without it being re-certified?

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#115562 - 11/12/03 05:18 PM Re: What is This? ...
stamcon Offline
Member

Registered: 03/24/01
Posts: 322
Loc: So San Francisco CA
Crash, an LB(conduit body) can contain splices, but the body can't be modified. The conduit body cubic inch capacity must be marked by the manufacturer in order to splice in it.

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#115563 - 11/12/03 05:50 PM Re: What is This? ...
SvenNYC Offline
Member

Registered: 08/19/02
Posts: 1685
Loc: New York City
How would such a violation be corrected?

I assume a special box is already sold for that type of configuration or a reducing connector? Or do you feed the fat pipe into a junction box first to tap into the thinner pipe and then from the box to the elbow?

If not....how would you go about puting something like this together properly?

Asking out of curiosity, not that I'm going to actually go out and do this for someone....

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#115564 - 11/12/03 06:11 PM Re: What is This? ...
sparky Offline
Member

Registered: 10/18/00
Posts: 5545
Sven,
i would imagine the conductors would need to be pulled out, and a proper JB installed

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#115565 - 11/12/03 06:11 PM Re: What is This? ...
stamcon Offline
Member

Registered: 03/24/01
Posts: 322
Loc: So San Francisco CA
Sven, a conventional junction box could be used. A tee condulet could also be installed in the horizontal run and the EMT rerouted over to it.

steve

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#115566 - 11/26/03 09:05 PM Re: What is This? ...
Spark Master Flash Offline
Member

Registered: 07/28/03
Posts: 145
Loc: Las Vegas, Nevada, USA
What article of the NEC does that violate? We drill holes in other boxes, etc. If it doesn't overstuff the LB, it doesn't seem like a bad move to me...can somebody educate me on this one?
_________________________
"When in doubt, short it out"

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#115567 - 01/07/04 02:27 PM Re: What is This? ...
rizer Offline
Member

Registered: 01/03/04
Posts: 90
Loc: bradenton ,fl.,usa
your violation is probably in the UL listing
for the lb. you cannot modify its surface.

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