ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
AreMetal Ladders Ever OK For Electrical Work?
by jwes2699. 01/21/18 05:58 PM
VDE 0100 to introduce AFCIs
by sparky. 01/20/18 05:09 PM
MRI LED lights dimmer control replacement - wow!
by Potseal. 01/19/18 08:52 PM
Video: Inventor of the GFCI self-testing shocks
by Bill Addiss. 01/17/18 11:11 PM
New in the Gallery:
Housebilding DIY wiring
SE cable question
Who's Online Now
0 registered members (), 15 guests, and 11 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
What is This? ... #115558
11/11/03 09:32 PM
11/11/03 09:32 PM
Admin  Online Content
OP
Administrator
Member
Joined: Oct 2000
Posts: 3,482
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:
Re: What is This? ... #115559
11/12/03 07:17 AM
11/12/03 07:17 AM
E
Electricmanscott  Offline
Member
Joined: Jan 2002
Posts: 1,457
Holden, MA USA
This used to be called "Yankee inginuity" now it is a violation.

Re: What is This? ... #115560
11/12/03 09:32 AM
11/12/03 09:32 AM
T
ThinkGood  Offline
Member
Joined: Aug 2002
Posts: 1,081
Milwaukee, WI
Extra service charge for a custom installation...

Re: What is This? ... #115561
11/12/03 07:33 PM
11/12/03 07:33 PM
C
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?

Re: What is This? ... #115562
11/12/03 08:18 PM
11/12/03 08:18 PM
S
stamcon  Offline
Member
Joined: Mar 2001
Posts: 330
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.


Steve
Re: What is This? ... #115563
11/12/03 08:50 PM
11/12/03 08:50 PM
S
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]

Re: What is This? ... #115564
11/12/03 09:11 PM
11/12/03 09:11 PM
S
sparky  Offline
Member
Joined: Oct 2000
Posts: 5,344
Sven,
i would imagine the conductors would need to be pulled out, and a proper JB installed

Re: What is This? ... #115565
11/12/03 09:11 PM
11/12/03 09:11 PM
S
stamcon  Offline
Member
Joined: Mar 2001
Posts: 330
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


Steve
Re: What is This? ... #115566
11/27/03 12:05 AM
11/27/03 12:05 AM
S
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"
Re: What is This? ... #115567
01/07/04 05:27 PM
01/07/04 05:27 PM
R
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.


Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
electure
electure
Fullerton, CA USA
Posts: 4,264
Joined: December 2000
Show All Member Profiles 
Top Posters(30 Days)
Admin 21
sparky 16
Potseal 15
Popular Topics(Views)
243,587 Are you busy
180,382 Re: Forum
170,859 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.018s Queries: 14 (0.004s) Memory: 1.0077 MB (Peak: 1.1847 MB) Zlib enabled. Server Time: 2018-01-22 04:41:31 UTC