30 CFR §18.52
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Enclosure covers that provide access to fuses, other than headlight, control-circuit, and handheld-tool fuses, shall be interlocked with a circuit-interrupting device. Fuses shall be inserted on the load side of the circuit interrupter.