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Title 30

Displaying title 30, up to date as of 7/20/2026. Title 30 was last amended 7/15/2026.
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Title 30Mineral ResourcesPart / Section
Chapter IMine Safety and Health Administration, Department of Labor1 – 199
Subchapter OCoal Mine Safety and Health70 – 90
Part 75Mandatory Safety Standards—Underground Coal Mines75.1 – 75.1916
Subpart HGrounding75.700 – 75.706
§ 75.700Grounding metallic sheaths, armors, and conduits enclosing power conductors.
§ 75.700-1Approved methods of grounding.
§ 75.701Grounding metallic frames, casings, and other enclosures of electric equipment.
§ 75.701-1Approved methods of grounding of equipment receiving power from ungrounded alternating current power systems.
§ 75.701-2Approved method of grounding metallic frames, casings and other enclosures receiving power from single-phase 110-220-volt circuit.
§ 75.701-3Approved methods of grounding metallic frames, casings and other enclosures of electric equipment receiving power from direct current power systems with one polarity grounded.
§ 75.701-4Grounding wires; capacity of wires.
§ 75.701-5Use of grounding connectors.
§ 75.702Protection other than grounding.
§ 75.702-1Protection other than grounding; approved by an authorized representative of the Secretary.
§ 75.703Grounding offtrack direct-current machines and the enclosures of related detached components.
§ 75.703-1Approved method of grounding.
§ 75.703-2Approved grounding mediums.
§ 75.703-3Approved methods of grounding offtrack mobile, portable and stationary direct-current machines.
§ 75.703-4Other methods of protecting offtrack direct-current equipment; approved by an authorized representative of the Secretary.
§ 75.704Grounding frames of stationary high-voltage equipment receiving power from ungrounded delta systems.
§ 75.704-1Approved methods of grounding.
§ 75.705Work on high-voltage lines; deenergizing and grounding.
§ 75.705-1Work on high-voltage lines.
§ 75.705-2Repairs to energized surface high-voltage lines.
§ 75.705-3Work on energized high-voltage surface lines; reporting.
§ 75.705-4Simultaneous repairs.
§ 75.705-5Installation of protective equipment.
§ 75.705-6Protective clothing; use and inspection.
§ 75.705-7Protective equipment; inspection.
§ 75.705-8Protective equipment; testing and storage.
§ 75.705-9Operating disconnecting or cutout switches.
§ 75.705-10Tying into energized high-voltage surface circuits.
§ 75.705-11Use of grounded messenger wires; ungrounded systems.
§ 75.706Deenergized underground power circuits; idle days—idle shifts.