ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
dsk 13
Admin 8
Recent Posts
Grid problem??
by annemarie1. 08/21/17 01:10 PM
Bathroom electrical
by doc. 08/19/17 06:53 AM
electircal ageing test on IPC
by SIAME. 08/15/17 02:43 AM
electrical aging test on IPC
by gfretwell. 08/15/17 12:27 AM
"Line level" audio on Cat 5?
by gfretwell. 08/08/17 10:39 PM
New in the Gallery:
Gallery Test
Popular Topics(Views)
240,051 Are you busy
175,671 Re: Forum
167,890 Need opinion
Who's Online Now
0 registered members (), 69 guests, and 10 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#197272 - 11/17/10 02:32 PM Bonding eye beams to a ground ring  
SJT  Offline
Member
Joined: Jul 2002
Posts: 241
PATCHOGUE, N.Y.
When a New Bldg.(industrial)is constructed with steel eye beams, does the connection to the beams need to be above ground level (not buried). I've seen a lot of Bldgs. with the exothermic connection above the ground. Is it by Code, to have them accesible? Or can this connection be below grade?
Thanks - Good Day


Work Gear for Electricians and the Trades

#197274 - 11/17/10 03:05 PM Re: Bonding eye beams to a ground ring [Re: SJT]  
renosteinke  Offline
Cat Servant
Member
Joined: Jan 2005
Posts: 5,316
Blue Collar Country
Oddly enough, this seems to be addressed in the 2011 changes. It appears that simply having the mounting bolts of the columns in the concrete is enough- and if they're tied to the rebar with ordinary tie wire, that's certainly enough.

That sadi, I've only given the changes a quick review, and have not reviewed the code in any detail - so my understanding my be incomplete.


#197277 - 11/17/10 04:50 PM Re: Bonding eye beams to a ground ring [Re: renosteinke]  
HotLine1  Offline


Member
Joined: Apr 2002
Posts: 6,858
Brick, NJ USA
SJT:
Having the GEC (earth) connection visable for the electrical inspector may be a concern. A lot of times, the footings, etc., are already backfilled before any elec inspections are called for.

Here in NJ, the Building Inspector IS required to inspect the ufer connection(s) when he does footing/foundation inspection(s).

Also, keep in mind that the electricians may not be 'on site' for the footings/foundations to install any grounding. Additionally, there may be changes in locations, or a GEC installed at a 'wrong' location.



John

#197304 - 11/18/10 06:28 PM Re: Bonding eye beams to a ground ring [Re: HotLine1]  
SJT  Offline
Member
Joined: Jul 2002
Posts: 241
PATCHOGUE, N.Y.
Thanks, I will check to find out exactly how the ufer ground was ran and how they picked up the eyebeams.


#197306 - 11/18/10 06:53 PM Re: Bonding eye beams to a ground ring [Re: HotLine1]  
Niko  Offline
Member
Joined: Aug 2006
Posts: 356
Campbell, CA
Originally Posted by HotLine1

Here in NJ, the Building Inspector IS required to inspect the ufer connection(s) when he does footing/foundation inspection(s).


My jurisdiction is same. San Francisco bay area.


Be kind to your neighbor, he knows where you live


#197313 - 11/19/10 06:58 AM Re: Bonding eye beams to a ground ring [Re: Niko]  
Tesla  Offline
Member
Joined: Jun 2004
Posts: 1,273
Sacramento, CA
The last time I faced this issue I bonded to the big steel above ground.

It was no hassle, and a cheaper procedure.

Because of water bonding and gas bonding, above ground bonding was in the plans.

Jumping over a couple of feet to clamp the big steel was no effort.

I'm scratching my head trying to figure out why you'd be so interested in having this bond done underground. From my experience, it would almost always be more expensive. Only exothermic or listed trick connectors would meet Code. By comparison it's quick and cheap to 'tag' the big iron above ground - usually in the electrical room -- or right next door.

Explain it to me.



Tesla


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: 0.012s Queries: 15 (0.002s) Memory: 0.7784 MB (Peak: 0.9299 MB) Zlib enabled. Server Time: 2017-08-22 01:46:28 UTC