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Code of Federal Regulations Title 30. Mineral Resources § 30.75.521 Lightning arresters;  ungrounded and exposed power conductors and telephone wires

Current as of January 02, 2025 | Updated by Findlaw Staff

Each ungrounded, exposed power conductor and each ungrounded, exposed telephone wire that leads underground shall be equipped with suitable lightning arresters of approved type within 100 feet of the point where the circuit enters the mine. Lightning arresters shall be connected to a low resistance grounding medium on the surface which shall be separated from neutral grounds by a distance of not less than 25 feet.

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Cite this article: FindLaw.com - Code of Federal Regulations Title 30. Mineral Resources § 30.75.521 Lightning arresters;  ungrounded and exposed power conductors and telephone wires - last updated January 02, 2025 | https://codes.findlaw.com/cfr/title-30-mineral-resources/cfr-sect-30-75-521/

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