Q: How do I know if the PESD is working?

A: Once PESDs are installed, verified by a qualified electrician, and documented in the drawings and safety procedures, a task qualified person can identify the status of the device functionality from outside the cabinet.

For example, if ANY of the LEDs are “ON” in a voltage indicator after opening the disconnect switch, this triggers additional tests and verification of the deenergized state by a qualified electrician.