This reminds me of an inspector here in SC. that told me I could not drive a ground rod at a detached sub panel.
The sub panel was on a lake and he made mention of "stray voltages" and a safety issue.
When I told him that the NEC required the rod he said " I am the authority and it is my decision, NO electrode anywhere near the water line".
It was a boat house near the water. He failed another guy for having an electrode for a sub that fed a dock.
He only allows an EGC from the main service panel. Odd wouldn't you agree?
