StacksVerified U.S. regulatory reference

30 CFR §57.22310

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Electrical cables used to power submersible sump pumps shall be accepted or approved by MSHA as flame resistant, or be installed in continuous metal conduit or metal pipe. The ends of such conduit or pipe shall be sealed to prevent entry of explosive gas or dust.