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diy solar

NEC grounding code has changed

BooneMtn

New Member
Joined
Jun 7, 2022
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NEC 2023 says to connect all grounding to the MSP ground only, but also says a separate ground for the array is permitted but not required.
BUT, a secondary ground could give rise to a dangerous earth ground potential between the separate earth ground connections, aka a ground loop.
This video from Univ Maryland is very helpful and current with NEC 2023.
 
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