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#115558 - 11/11/03 10:32 PM What is This? ...  
Admin  Offline

Administrator
Member
Joined: Oct 2000
Posts: 3,447
NY, USA
[Linked Image]
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


Tools for Electricians:

#115559 - 11/12/03 08:17 AM Re: What is This? ...  
Electricmanscott  Offline
Member
Joined: Jan 2002
Posts: 1,457
Holden, MA USA
This used to be called "Yankee inginuity" now it is a violation.


#115560 - 11/12/03 10:32 AM Re: What is This? ...  
ThinkGood  Offline
Member
Joined: Aug 2002
Posts: 1,081
Milwaukee, WI
Extra service charge for a custom installation...


#115561 - 11/12/03 08:33 PM Re: What is This? ...  
crash  Offline
Member
Joined: Oct 2003
Posts: 147
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?


#115562 - 11/12/03 09:18 PM Re: What is This? ...  
stamcon  Offline
Member
Joined: Mar 2001
Posts: 329
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.


#115563 - 11/12/03 09:50 PM Re: What is This? ...  
SvenNYC  Offline
Member
Joined: Aug 2002
Posts: 1,691
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? [Linked Image]

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


#115564 - 11/12/03 10:11 PM Re: What is This? ...  
sparky  Offline
Member
Joined: Oct 2000
Posts: 5,311
Sven,
i would imagine the conductors would need to be pulled out, and a proper JB installed


#115565 - 11/12/03 10:11 PM Re: What is This? ...  
stamcon  Offline
Member
Joined: Mar 2001
Posts: 329
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


#115566 - 11/27/03 01:05 AM Re: What is This? ...  
Spark Master Flash  Offline
Member
Joined: Jul 2003
Posts: 141
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"

#115567 - 01/07/04 06:27 PM Re: What is This? ...  
rizer  Offline
Member
Joined: Jan 2004
Posts: 91
bradenton ,fl.,usa
your violation is probably in the UL listing
for the lb. you cannot modify its surface.



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