전체 글82 Interior of enclosures or raceways installed underground Interior of a enclosures or raceways installed underground as ( ). ARTICLE 300 - GENERAL REQUIREMENTS FOR WIRING METHODS AND MATERIALS 300.5 Underground Installations. (B) Wet Locations. The interior of enclosures or raceways installed underground shall be considered to be a wet location. Insulated conductors and cables installed in these enclosures or raceways in underground insta.. 2024. 2. 18. Maximum Resistance to ground(ohm) What is the maximum allowable resistance to ground (ohms) for a single grounding electrode without the need to add an additional grounding electrode according to the NEC? ARTICLE 250 - GROUNDING AND BONDING 250.53 Grounding Electrode System Installation. (2) Supplemental Electrode Required. The supplemental electrode shall be permitted to be bonded to one of the following:(1) Rod, pipe, or pla.. 2024. 2. 17. 이전 1 ··· 18 19 20 21 다음 반응형