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Different jurisdictions have different concepts. This ground rod in Australia has a six turn coil at the rod connection point. This must be to discourage lightning from entering the AC grounding system.

In the U. S., it's the opposite, we require the AC and lightning protection systems to be bonded and this coil would probably result in a disapproval.

I wonder what the down under experience is compared to the U. S.?

InspectorE

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