View all text of Subpart C [§ 120.310 - § 120.392]

§ 120.378 - Ungrounded systems.

Each ungrounded system must be provided with a suitably sensitive ground detection system, located at the respective switchboard, that provides continuous indication of circuit status to ground with a provision to momentarily remove the indicating device from the reference ground.

[CGD 85-080, 62 FR 51352, Sept. 30, 1997]