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

来源: 于 2025-02-13 14:12:43 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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.