Surface High-Voltage Distribution

  1. Law
  2. CFR 30
  3. Mineral Resources
  4. Mine Safety and Health Administration, Department of Labor
  5. Coal Mine Safety and Health
  6. Mandatory Safety Standards, Surface Coal Mines and Surface Work Areas of Underground Coal Mines
  7. Surface High-Voltage Distribution

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Section
77.800

High-voltage circuits; circuit breakers.

Section
77.800-1

Testing, examination, and maintenance of circuit breakers; procedures.

Section
77.800-2

Testing, examination, and maintenance of circuit breakers; record.

Section
77.801

Grounding resistors.

Section
77.801-1

Grounding resistors; continuous current rating.

Section
77.802

Protection of high-voltage circuits; neutral grounding resistors; disconnecting devices.

Section
77.803

Fail safe ground check circuits on high-voltage resistance grounded systems.

Section
77.803-1

Fail safe ground check circuits; maximum voltage.

Section
77.803-2

Ground check systems not employing pilot check wires; approval by the Secretary.

Section
77.804

High-voltage trailing cables; minimum design requirements.

Section
77.805

Cable couplers and connection boxes; minimum design requirements.

Section
77.806

Connection of single-phase loads.

Section
77.807

Installation of high-voltage transmission cables.

Section
77.807-1

High-voltage powerlines; clearances above ground.

Section
77.807-2

Booms and masts; minimum distance from high-voltage lines.

Section
77.807-3

Movement of equipment; minimum distance from high-voltage lines.

Section
77.808

Disconnecting devices.

Section
77.809

Identification of circuit breakers and disconnecting switches.

Section
77.810

High-voltage equipment; grounding.

Section
77.811

Movement of portable substations and transformers.