IIRC NEC requires a welded/brazed/Cadweld connection of ground wire to
ground rods if the connection is buried. However my inspector ignored
an obviously below grade screw clamp to one ground rod that he required
to back up a large Ufer ground. 0 for 2 IMO.
Grant KZ1W
On 5/6/2013 2:13 PM, Hans Hammarquist wrote:
Gentlemen,
It's hard to believe that a screw connection can be approved for burial. Even
if it is allowed, and why wouldn't it, I still would (very strongly) prefer to
be able to inspect them now-and-then.
I used short pieces of 4" schedule 40 PVC pipes around my ground connections. Lowes
has (I am sure) caps that fit over the 4" pipes so grass and other stuff can cover
them. I also like to be able to run the lawn mower over it without problems.
Hans - N2JFS
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