30 CFR § 77.703 Mandatory Safety Standards, Surface Coal Mines and Surface Work Areas of Underground Coal Mines

§ 77.703 Grounding frames of stationary high-voltage equipment receiving power from ungrounded delta systems.

Current through Jul 27, 2026 · Read all of Part 77

The frames of all stationary high-voltage equipment receiving power from ungrounded delta systems shall be grounded by methods approved by an authorized representative of the Secretary.

← § 77.702 Protection other than grounding.§ 77.703-1 Approved methods of grounding. →