A 480V WYE connected service is solidly grounded but has no supply side ground fault protection. A _____ fed from the service must have a ground fault protection if it is connected to a feeder disconnected rating.

A 480V WYE connected service is solidly grounded but has no supply side ground fault protection. A _____ fed from the service must have a ground fault protection if it is connected to a feeder disconnected rating.