30 CFR §18.39
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Hose conduit shall be provided for mechanical protection of all machine cables that are exposed to damage. Hose conduit shall be flame resistant and have a minimum wall thickness of 3/16 inch. The flame resistance of hose conduit will be determined in accordance with the requirements of § 18.65.