ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Recent Posts
VFD MotorFeeders
by gfretwell. 10/19/17 01:02 AM
Generator Cable Sizing
by brsele. 10/18/17 07:39 PM
What do you do?
by gfretwell. 10/17/17 01:08 AM
Good ol' copper pipe in the fuse holder trick
by HotLine1. 10/16/17 07:16 PM
Another generator question
by HotLine1. 10/16/17 07:02 PM
New in the Gallery:
Gallery Test
Popular Topics(Views)
241,420 Are you busy
177,393 Re: Forum
168,991 Need opinion
Who's Online Now
0 registered members (), 15 guests, and 8 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#118685 - 10/19/04 11:10 PM Concrete LB  
Admin  Offline

Administrator
Member
Joined: Oct 2000
Posts: 3,458
NY, USA
Quote
Seems that one of our clients decided to relocate their air compressors (Ingersoll-Rand screw type) and poured a nice, thick concrete pad on the south side of their mill. The 2" conduit LB feeds conveyors just beyond that new pad. I guess that's how they make sure that they don't dig up the conduit with a backhoe?

-Ohm_Boy
[Linked Image]


Tools for Electricians:

#118686 - 10/20/04 07:12 PM Re: Concrete LB  
Dave55  Offline
Member
Joined: May 2004
Posts: 697
Crystal Lake, Illinois, USA
Concrete-tight


#118687 - 10/20/04 07:49 PM Re: Concrete LB  
Ohm_Boy  Offline
Junior Member
Joined: Oct 2004
Posts: 7
Yep. I figure it's wire-tight now, too. Although I suppose that as long as we can get a porta-band in there, it's still servicable, right? Anyone know if the code requires that both screws actually be in the removable portion of a cover?


#118688 - 10/20/04 08:49 PM Re: Concrete LB  
John Steinke  Offline
Member
Joined: Apr 2001
Posts: 518
Reno,Nv., USA
Actually, my concern is that most LB's are made of zinc, or aluminum, neither of which will long withstand being eaten up by the alkali in the concrete. I do not believe that such bodies could ever be listed for such burial.
The LB must be "accessible." As NEC defined, that does not include the use of a jackhammet to reach it.


#118689 - 10/20/04 09:50 PM Re: Concrete LB  
Ohm_Boy  Offline
Junior Member
Joined: Oct 2004
Posts: 7
Quote
most LB's are made of zinc, or aluminum

This one is PVC.
On the brighter side, we can cut and glue it indefinitely. [Linked Image])


#118690 - 10/20/04 10:55 PM Re: Concrete LB  
electure  Offline


Member
Joined: Dec 2000
Posts: 4,262
Fullerton, CA USA
Quote
neither of which will long withstand being eaten up by the alkali in the concrete.


[Linked Image]Thank goodness they used asphalt on this one

[Linked Image]


#118691 - 10/21/04 12:32 AM Re: Concrete LB  
Ohm_Boy  Offline
Junior Member
Joined: Oct 2004
Posts: 7
Hmmm... so "LB Paving" a popular practice, I see. I feel so much better now.


#118692 - 10/21/04 05:32 AM Re: Concrete LB  
Big Jim  Offline
Member
Joined: Jul 2003
Posts: 394
Denver, CO USA
Was that a code required "encasement"?


#118693 - 10/21/04 10:47 PM Re: Concrete LB  
John Steinke  Offline
Member
Joined: Apr 2001
Posts: 518
Reno,Nv., USA
Here, I go through the trouble of writing a brilliant post, and you guys have to spoil it by pointing out a few details (PVC, Asphalt) that let the air out of my balloon....

Don't you just hate it when that happens?



Member Spotlight
Theelectrikid
Theelectrikid
Levittown, PA
Posts: 810
Joined: April 2004
Show All Member Profiles 
Featured:

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

 

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.015s Queries: 14 (0.003s) Memory: 0.7996 MB (Peak: 0.9647 MB) Zlib enabled. Server Time: 2017-10-21 04:48:04 UTC