You should establish a GROUND BUSS! No, it is not made by GM, grin! It is a
metal bar or plate you can drill and tap or put screws, nuts, and lock
washers into! Then run INDIVIDUAL, yes, individual wires from equipment to
the ground buss. Run old coax braid or a large SINGLE wire, to the outside
ground rod field. This stops what is called GROUND LOOPS.
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