When maintenance is not performed on the electrical distribution system, which method is used to determine proper PPE?

• A. Incident energy analysis method
• B. PPE Category method
• C. Either method
• D. None of the above

Answer: (D)

PPE for arc flash is determined by evaluating the potential energy released if an arc were to occur, using either an incident energy analysis or a PPE category approach. These methods apply when there is a task on or near energized electrical equipment that could produce an arc hazard. If maintenance is not performed on the electrical distribution system, there isn’t an energized task to assess, so neither method is applicable. In that situation, you’d rely on general safe-work practices and ensure the system is de-energized and protected before any work, meaning no PPE determination is made by those arc-flash methods. Therefore, none of the listed methods is used.