1. LawStack
  2. Title 30 - Mineral Resources
  3. Chapter I - MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
  4. Subchapter O - COAL MINE SAFETY AND HEALTH
  5. Part 75 - MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES
  6. Subpart J - Underground Low- and Medium-Voltage Alternating Current Circuits
  7. 30 CFR § 75.902-2
30 CFR § 75.902-2
Approved ground check systems not employing pilot check wires
July 29, 2020
CFR

Ground check systems not employing pilot check wires will be approved only if it is determined that the system includes a fail safe design causing the circuit breaker to open when ground continuity is broken.

Previous
§ 75.902-1 Maximum voltage ground check circuits
Next
§ 75.902-4 Attachment of ground conductors and ground check wires to equipment frames; use of separate connections

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