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 77 - MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES
  6. Subpart I - Surface High-Voltage Distribution
  7. 30 CFR § 77.803-2
30 CFR § 77.803-2
Ground check systems not employing pilot check wires; approval by the Secretary
July 29, 2020
CFR

Ground check systems not employing pilot check wires shall be approved by the Secretary only if it is determined that the system includes a fail safe design which will cause the circuit interrupter to open when ground continuity is broken.

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§ 77.803-1 Fail safe ground check circuits; maximum voltage
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§ 77.804 High-voltage trailing cables; minimum design requirements

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