Power and Ground Distribution: Service Precautions

IMPORTANT: After you make any electrical repair, always test the circuit by operating the devices in the circuit. This confirms not only that the repair is correct, but also that the cause of the complaint was correctly identified.

All electrical circuits are protected against excessive loads which might occur because of shorts or overloads in the wiring system. A fuse or circuit breaker provides such protection. A short may cause a fuse to blow or a circuit breaker to open.