ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Grounding electrodes
by gfretwell - 09/07/21 03:41 PM
Looking For Electricians in the Midlands
by Alex247 - 09/06/21 05:26 AM
Backup Generator Done Right
by timmp - 08/31/21 04:44 PM
New in the Gallery:
Now you know.
Now you know.
by Tom_Horne, September 7
February, North East Indiana
February, North East Indiana
by timmp, July 25
Who's Online Now
1 members (Scott35), 32 guests, and 11 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Joined: Jul 2002
Posts: 241
S
SJT Offline OP
Member
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

Joined: Jan 2005
Posts: 5,316
Cat Servant
Member
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.

Joined: Apr 2002
Posts: 7,279
Likes: 3
Member
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
Joined: Jul 2002
Posts: 241
S
SJT Offline OP
Member
Thanks, I will check to find out exactly how the ufer ground was ran and how they picked up the eyebeams.

Joined: Aug 2006
Posts: 356
Member
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

Joined: Jun 2004
Posts: 1,273
T
Member
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

Link Copied to Clipboard
Featured:

Tools for Electricians
Tools for Electricians
 

* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
cookcc
cookcc
California ,Long Beach
Posts: 28
Joined: May 2007
Top Posters(30 Days)
timmp 3
Popular Topics(Views)
282,897 Are you busy
216,663 Re: Forum
203,095 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5