GroundRules
4VAC25-40-2480: Lightning arrester for telephone circuits
Where this section sits in the code
- Title 4. Conservation And Natural Resources
- Agency 25. Department of Energy
- Chapter 40. Safety and Health Regulations for Mineral Mining
- Part XII. Electricity—Surface and Underground
A lightning arrester shall be provided where telephone circuits enter a mine; mine telephone extensions in surface buildings shall be provided with a lightning arrester for each circuit entering the building.
Collected 2026-09-14T04:46:01Z. Source file · JSON