I went to a house and at the cold waterpipe the ground was arcing against the water pipe. I checked the neutral at the tap,meter socket and panel all were tight and made sure the neutrals and grounds were tight inside the panel. I tightened the ground connection and it stopped what could be the cause?
I have seen grounds carry current even with the mains to the house open! Sometimes your ground connection is a path for current should one of your neighbours say have a bad or open neutral somewhere in their service.. A.D
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