Before electrical work can be safely undertaken, the equipment must be de-energized, locked and tagged out, and verification must be made that the circuit is actually dead. What testing device is most certain to reliably verify that a circuit is actually dead?

Correct Answer: Option B — an auto-ranging digital multimeter

Digital multimeters provide reliable zero-voltage verification through low-impedance testing modes that prevent ghost voltages. Per 46 CFR Subchapter J safety mandates, verifying a dead circuit with a calibrated meter is essential before commencing any shipboard electrical maintenance.