§ 75.700-1. Approved methods of grounding.
128 words·~1 min read·
/us/cfr/t30/s§ 75.700-1·A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
Metallic sheaths, armors and conduits in resistance grounded systems where the enclosed conductors are a part of the system will be approved if a solid connection is made to the neutral conductor; in all other systems, the following methods of grounding will be approved:
(a)A solid connection to a borehole casing having low resistance to earth;
(b)A solid connection to metal waterlines having low resistance to earth;
(c)A solid connection to a grounding conductor, other than the neutral conductor of a resistance grounded system, extending to a low resistance ground field located on the surface;
(d)Any other method of grounding, approved by an authorized representative of the Secretary, which ensures that there is no difference in potential between such metallic enclosures and the earth.