Courtesy of www.MikeHolt.com. All questions and answers are based on the 2023 NEC. Q1: Where _____ may be present in an agricultural building, enclosures and fittings shall have corrosion resistance ...
(1) Below permanent moisture level. If practicable, pipe electrodes must be embedded below the permanent moisture level and be free from nonconductive coatings such as paint or enamel. Exception: A ...