30 CFR § 75.703 - Grounding offtrack direct-current machines and the enclosures of related detached components.

---
identifier: "/us/cfr/t30/s75.703"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "30 CFR § 75.703 - Grounding offtrack direct-current machines and the enclosures of related detached components."
title_number: 30
title_name: "Mineral Resources"
section_number: "75.703"
section_name: "Grounding offtrack direct-current machines and the enclosures of related detached components."
chapter_name: "MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR"
subchapter_number: "O"
subchapter_name: "COAL MINE SAFETY AND HEALTH"
part_number: "75"
part_name: "MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "30 U.S.C. 811, 813(h), 957."
regulatory_source: "35 FR 17890, Nov. 20, 1970, unless otherwise noted."
cfr_part: "75"
---


# 75.703 Grounding offtrack direct-current machines and the enclosures of related detached components.

****[Statutory Provisions]

The frames of all offtrack direct-current machines and the enclosures of related detached components shall be effectively grounded, or otherwise maintained at no less safe voltages, by methods approved by an authorized representative of the Secretary.