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 § 77.803-1
30 CFR § 77.803-1
Fail safe ground check circuits; maximum voltage
May 28, 2026
CFR

§ 77.803-1 Fail safe ground check circuits; maximum voltage.

The maximum voltage used for ground check circuits under § 77.803 shall not exceed 96 volts.

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§ 77.803 Fail safe ground check circuits on high-voltage resistance grounded systems
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§ 77.803-2 Ground check systems not employing pilot check wires; approval by the Secretary

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