ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Violation?
by renosteinke - 01/27/23 09:52 PM
Does NEC 551.71 (F) apply to dwellings?
by BigB - 01/20/23 10:46 AM
Power submeter connections
by HotLine1 - 01/19/23 09:09 AM
AFDD's coming to the UK
by Texas_Ranger - 01/17/23 07:22 PM
New in the Gallery:
Burger King crown sillyness
Burger King crown sillyness
by wa2ise, December 11
240/208 to a house
240/208 to a house
by wa2ise, October 9
Who's Online Now
0 members (), 15 guests, and 13 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
#211254 09/30/13 12:26 PM
Joined: May 2010
Posts: 30
B
Bravo Offline OP
Member
Hello,

I have a metal chain link fence inside a building that surrounds process equipment. Does the fence have to be grounded? I cant find req's in the NEC.

Thanks in advance


Stay up to Code with the Latest NEC:


2020 NEC & Related Reference & Study Guides
2020 NEC & Related Reference & Study Guides
Pass Your Exam the FIRST TIME with these Exam Prep Combos:
 

>> Master Electrician Exam Prep     >> JourneyMan Electrician Exam Prep
 

Bravo #211255 09/30/13 01:36 PM
Joined: Jul 2004
Posts: 9,788
Likes: 14
G
Member
A general rule that is not always fleshed out well in the language is that you should bond anything that is likely to be energized. If this fence is not near any energized conductors, it probably does not need to be bonded.

As an aside, it is probably fairly well "grounded" by the posts in the ground but that is not the same as bonded.

Places where I see fences bonded is where there is significant radiated power. This can be a radio/TV transmitter or just a big distribution transformer farm.

680 will also require that a fence be bonded if it is <5' from the water.


Greg Fretwell
Bravo #211258 09/30/13 06:29 PM
Joined: Mar 2005
Posts: 1,803
Member
A friend bought an old farmhouse cheap, cheap because a new 400,000 volt line from a new atomic reactor passed close by [200 yards, heading for Italy]- and destroyed local realty values. Now the poco has bonded the neighbor's entire sheet metal barns and machinery shed. Is that why? Should he do the same to his barn, do you think?


Wood work but can't!
Bravo #211259 09/30/13 06:48 PM
Joined: Feb 2003
Posts: 368
M
Member
I wonder if they are worried about tingle voltage affecting the livestock so that's why the POCO paid for the grounding?

Bravo #211260 09/30/13 08:18 PM
Joined: Jul 2004
Posts: 9,788
Likes: 14
G
Member
I have a 250KV and two 48KV lines running behind my house and I can't seem to detect any strange voltage problems. I tried every YouTube trick I have seen to light a fluorescent tube with no joy.
I even tried stringing 100' of THHN directly under the poles with various terminations or simply floating ... nothing.

It is a little disappointing actually. I thought I could get free lights for my boat house, virtually directly under the line.


Greg Fretwell
Bravo #211261 09/30/13 08:45 PM
Joined: Apr 2002
Posts: 7,333
Likes: 7
Member
Not on YouTube, but:
Changing 10'HO lamps in a sign, my 'ground man' yells on the two-way.."the bulb is lit!!".

End of the tube was 3'+/- from a 13.2 primary. It was not 'bright' but it was glowing!

OOOPS!


John
Bravo #211262 09/30/13 08:55 PM
Joined: Jul 2004
Posts: 9,788
Likes: 14
G
Member
The poles are marked 115' but I assume 15' or more is in the ground. I suppose I could climb up a little closer and try. wink


Greg Fretwell

Link Copied to Clipboard
Featured:

Tools for Electricians
Tools for Electricians
 

* * * * * * *
2023 National Electrical Code (NEC)
2023 NEC Now Available!
 
* * * * * * *

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

 

Member Spotlight
CDS
CDS
Nicholson Ga
Posts: 34
Joined: June 2006
Top Posters(30 Days)
BigB 9
triple 3
Popular Topics(Views)
302,486 Are you busy
231,876 Re: Forum
216,500 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5