30 CFR § 77.505 - Cable fittings; suitability.
---
identifier: "/us/cfr/t30/s77.505"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "30 CFR § 77.505 - Cable fittings; suitability."
title_number: 30
title_name: "Mineral Resources"
section_number: "77.505"
section_name: "Cable fittings; suitability."
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: "2026-03-24"
last_updated: "2026-03-24"
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"
---
# 77.505 Cable fittings; suitability.
Cables shall enter metal frames of motors, splice boxes, and electric compartments only through proper fittings. When insulated wires, other than cables, pass through metal frames, the holes shall be substantially bushed with insulated bushings.