Lightning arresters, ungrounded and exposed power conductors and telephone wires.

  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. Electrical Equipment - General
  8. Lightning arresters, ungrounded and exposed power conductors and telephone wires.

Checkout our iOS App for a better way to browser and research.

§ 77.508 Lightning arresters, ungrounded and exposed power conductors and telephone wires.

All ungrounded, exposed power conductors and telephone wires shall be equipped with suitable lightning arresters which are adequately installed and connected to a low resistance grounding medium.


Download our app to see the most-to-date content.