What is the appropriate response if you encounter a live electrical wire during maintenance?

When encountering a live electrical wire during maintenance, the appropriate response is to immediately turn off the power at the nearest breaker. This is crucial for ensuring safety and preventing any electrical shocks, which can be life-threatening. Shutting off the power eliminates the immediate danger before any further action can be taken.

Assessing the situation while the power is still on does not address the risk of electrocution or fire, and trying to touch the wire to check for electricity puts the individual directly in harm's way. Continuing with maintenance work without addressing the live wire is highly hazardous and could lead to serious injury or death. While calling a supervisor might be a part of standard protocol, the priority should always be to secure the area and eliminate danger before notifying others. Thus, turning off the power is the most responsible and immediate action one can take to safeguard both personal safety and the safety of others in the vicinity.