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manhole cover grounding #76209
12/29/00 02:12 PM
12/29/00 02:12 PM
R
resqcapt19  Offline OP
Member
Joined: Nov 2000
Posts: 2,148
IL
It is my opinion that 250-2(b)requires that metal manhole covers be connected to an equipment grounding conductor. Has anyone ever seen this done? As many manhole installations are outside the scope of the NEC, does the NESC have a requirement to ground conductive manhole covers? Last night a dog in Chicago was killed when it stepped on an energized manhole cover (see http://www.chicagotribune.com/news/metro/chicago/article/0,2669,SAV-0012290261,FF.html). A few years ago an 11 year old girl in an eastern city was killed in the same manner.
Don(resqcapt19)


Don(resqcapt19)
2017 / 2014 NEC & Related Books and Study Guides
Re: manhole cover grounding #76210
12/29/00 05:58 PM
12/29/00 05:58 PM
Bill Addiss  Offline
Member
Joined: Oct 2000
Posts: 3,902
NY, USA
Don,

Thanks for sharing that with us!
The url doesn't quite make it though there's an extra ). at the end that makes it not work. The address is:
http://www.chicagotribune.com/news/metro/chicago/article/0,2669,SAV-0012290261,FF.html

Happy New Year! [Linked Image]

Re: manhole cover grounding #76211
12/29/00 09:37 PM
12/29/00 09:37 PM
Bill Addiss  Offline
Member
Joined: Oct 2000
Posts: 3,902
NY, USA
Don,

It sounds like grounding wouldn't be a bad idea. Perhaps some sort of pointed fitting could be attached to the rim somehow that would dig into or make good contact with the heavy cover when in place.


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