This is the current code if you are really interested in thi

https://eepower.com/technical-articles/national-electrical-code-2023-basics-grounding-and-bonding-part-12/#

The requirement of a second ground rod is a recent thing. Previously it was ok just to tie the ground to a water pipe. 

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• 謝謝波大。這個還真的看不懂。太專業了。 -老九不能走- ♂ (0 bytes) () 02/13/2025 postreply 14:23:55