# 30 CFR 75.508 — Map of electrical system.

- **Chapter:** CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR
- **Subchapter:** SUBCHAPTER O—COAL MINE SAFETY AND HEALTH
- **Part:** PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES
- **Subpart:** Subpart F—Electrical Equipment—General
- **Snapshot current through:** 2026-08-19
- **Official eCFR:** https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-F/section-75.508

## Current public text

[Statutory Provisions]

The location and the electrical rating of all stationary electric apparatus in connection with the mine electric system, including permanent cables, switchgear, rectifying substations, transformers, permanent pumps, and trolley wires and trolley feeder wires, and settings of all direct-current circuit breakers protecting underground trolley circuits, shall be shown on a mine map. Any changes made in a location, electric rating, or setting shall be promptly shown on the map when the change is made. Such map shall be available to an authorized representative of the Secretary and to the miners in such mine.

## Provenance

- Source: Electronic Code of Federal Regulations, Title 30
- Representation: Realm public-data crosswalk
- Legal status: The eCFR is an editorial compilation; consult the official source before relying on the text.