The use of structural metal as a grounding electrode is an issue that has been revised during several recent Code cycles. The 2011 NEC has once again revisited the rule explaining when a structural ...
Courtesy of www.MikeHolt.com. Based on the 2023 NEC. Question: Grounding electrode conductors smaller than _____ shall be protected in rigid metal conduit, IMC, PVC conduit, electrical metallic tubing ...