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#72577 - 12/04/06 02:45 PM Should a metal chain-link fence be grounded?
Rich Thomas Offline
Member
Registered: 03/09/05
Posts: 48
Loc: Seattle, Washington, USA
This is for the design of a new 100KW, 277-480V engine-generator installation. The E/G will be mounted on a reinforced concrete pad. The pad will contain rebar grounding, and a buried ground ring with a ground rod at each corner. A chain-link fence will encircle the pad. There is nothing electrical mounted on, or near the fence. As far as I can see, the fence cannot become energized from the E/G equipment.

Do you recommend connecting the fence to the grounding electrode system for the generator/pad?

If yes, what is your recommended procedure? Should each post have a bolted connection to the grounding system?

Thanks for your input.
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#72578 - 12/04/06 04:34 PM Re: Should a metal chain-link fence be grounded?
livetoride Offline
Member
Registered: 01/11/05
Posts: 109
Loc: san diego ca usa
You did not state enough info but the fence most likely should be BONDED. My thought. Rod
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#72579 - 12/04/06 04:50 PM Re: Should a metal chain-link fence be grounded?
LK Offline
Member
Registered: 01/21/03
Posts: 1429
Loc: New Jersey
On the job you described, we have a professional engineer, supply the plans with a detail of all the bonding, this is a design issue.
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#72580 - 12/04/06 05:25 PM Re: Should a metal chain-link fence be grounded?
JoeTestingEngr Offline
Member
Registered: 11/04/05
Posts: 781
Loc: Chicago, Il.
I know that if I was the guy inside the fence, working on the genny, and could touch both, I would feel better knowing they're bonded.
Joe
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#72581 - 12/04/06 08:18 PM Re: Should a metal chain-link fence be grounded?
mhulbert Offline
Member
Registered: 10/19/04
Posts: 132
Loc: Anaheim, CA USA
If it was a HV substation, it would be bonded, just so everything's at equipotential.

I doubt the fenc e is "likely to be energized" unless you have OH wiring or other hazards. But nothing is impossible. You have to decide if it's improbable.

If I was doing it, I'd ground it!
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