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#76209 - 12/29/00 10:12 AM manhole cover grounding
resqcapt19 Offline
Member

Registered: 11/10/00
Posts: 2209
Loc: 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)
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#76210 - 12/29/00 01:58 PM Re: manhole cover grounding
Bill Addiss Offline
Member

Registered: 10/07/00
Posts: 4196
Loc: 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!

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#76211 - 12/29/00 05:37 PM Re: manhole cover grounding
Bill Addiss Offline
Member

Registered: 10/07/00
Posts: 4196
Loc: 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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