I am looking for guideance grounding two and one half miles of plastic coated chain link fence. It has three strands of barb on the top, the barbs are exposed metal but the cable is plastic coated also. If a ground is attached to a post, only that post will be grounded because of the plastic coated ties and insulation. Any helpfull suggestions would be appreciated.
Fence grounding
- Thread starter donblasy
- Start date
- Status
- Location
- Massachusetts
Why are you grounding it?
Is it likely to become energized?
Is it likely to become energized?
sparky_magoo
Senior Member
- Location
- Reno
A ground rod wouldn't clear a fault if the fence were to become energized.
petersonra
Senior Member
- Location
- Northern illinois
- Occupation
- Semi-retired engineer
dereckbc said:
normally does not require grounding either.:smile:
- Location
- Illinois
- Occupation
- retired electrician
Where is this fence installed at? If it is under or very close to high voltage transmission lines it may require grounding.
Don
Don
ptonsparky
Tom
- Occupation
- EC - retired
Sounds like you are trying to keep something out or in. Either way, the lack of grounding could help.
- Location
- Illinois
- Occupation
- retired electrician
In that case you many want to isolate and energize it
There is no code rule that would require this fence to be grounded.
Don
- Location
- Windsor, CO NEC: 2017
- Occupation
- Hospital Master Electrician
Can you elaborate? I have a fence pretty close to HV transmission lines.don_resqcapt19 said:
- Location
- Illinois
- Occupation
- retired electrician
George,
In that case, it is possible that you can have enough voltage induced on the metal fence to be a shock hazard. In most cases, an all metal fence with metal poles would not have this problem, but a metal wire fence on wooden poles may have this type of problem. While not exactly the same there is some information on this problem here. The information starts on page 2 of the PDF. Section 5 of the document (p14) talks about the shock hazard.
Don
In that case, it is possible that you can have enough voltage induced on the metal fence to be a shock hazard. In most cases, an all metal fence with metal poles would not have this problem, but a metal wire fence on wooden poles may have this type of problem. While not exactly the same there is some information on this problem here. The information starts on page 2 of the PDF. Section 5 of the document (p14) talks about the shock hazard.
Don
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bphgravity
Senior Member
- Location
- Florida
donblasy said:
Does the facility have a lightning protection system installed?
brian john
Senior Member
- Location
- Kilmarnock, Va
- Occupation
- Retired after 52 years in the trade.
And there lies the problem, someone thinks this is a safer installation, so it makes specs and next thing you know non-UL-listed ground rods are being driven all over the country, the non listing is discovered all those rods MUST be removed and UL listed rods installed..Money for some contractor.
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zog
Senior Member
- Location
- Charlotte, NC
Either way I am glad to hear that homeland security is putting up fences somewhere!!!
- Location
- Windsor, CO NEC: 2017
- Occupation
- Hospital Master Electrician
Thanks, Don. I'll take a look at that tonight - I have an all metal fence, so no worries there, but I'll still look over the info.
- Status