30 CFR § 77.701 - Grounding metallic frames, casings, and other enclosures of electric equipment.

---
identifier: "/us/cfr/t30/s77.701"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "30 CFR § 77.701 - Grounding metallic frames, casings, and other enclosures of electric equipment."
title_number: 30
title_name: "Mineral Resources"
section_number: "77.701"
section_name: "Grounding metallic frames, casings, and other enclosures of electric equipment."
chapter_name: "MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR"
subchapter_number: "O"
subchapter_name: "COAL MINE SAFETY AND HEALTH"
part_number: "77"
part_name: "MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "30 U.S.C. 811."
regulatory_source: "36 FR 9364, May 22, 1971, unless otherwise noted."
cfr_part: "77"
---


# 77.701 Grounding metallic frames, casings, and other enclosures of electric equipment.

Metallic frames, casings, and other enclosures of electric equipment that can become “alive” through failure of insulation or by contact with energized parts shall be grounded by methods approved by an authorized representative of the Secretary.