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My inspector was good with my "galvanized" ground screws. He didn't ask how long they were and I didn't tell him they were only 82". He also didn't require that the PV array be grounded/bonded to the primary structure. I replied with...sounds good.
"(2) Metal In-ground Support Structure(s). One or more metal in-ground support structure(s) in direct contact with the earth vertically for 3.0 m (10 ft) or more, with or without concrete encasement. If multiple metal in-ground support structures are present at a building or a structure, it shall be permissible to bond only one into the grounding electrode system.
Informational Note: Metal in-ground support structures include, but are not limited to, pilings, casings, and other structural metal."
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