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 F - Electrical Equipment—General
  7. 30 CFR § 77.508-1
30 CFR § 77.508-1
Lightning arresters; wires entering buildings
July 29, 2020
CFR

Lightning arresters protecting exposed telephone wires entering buildings shall be provided at the point where each such telephone wire enters the building.

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§ 77.508 Lightning arresters, ungrounded and exposed power conductors and telephone wires
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§ 77.509 Transformers; installation and guarding

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