Which activity has potential for ARC Flash?

The activity with potential for ARC Flash is related to grounding a circuit. ARC Flash occurs when there is a fault or short circuit, creating a conductive pathway that allows energy to escape and potentially ignite surrounding materials or components. Grounding a circuit involves connecting it to the earth or a ground reference, which may expose the worker to high voltage levels if not done correctly. This activity requires careful procedures and protective equipment because if there’s a fault in the circuit while grounding, an ARC Flash could occur, leading to serious injury or damage.

Changing light bulbs, performing maintenance on a vehicle, and inspecting power lines can have safety risks associated with them, but they are not primarily related to the potential for an ARC Flash phenomenon in the same way that improperly grounding a circuit can be. While each of these activities also carries electrical hazards, the specific focus on grounding highlights the significant risk of ARC Flash in that context.