As necessary, replace a main breaker or an individual circuit breaker as described in the following procedures.
This equipment operates at high voltage. Use extreme caution during test
procedure. Touching a live wire can cause serious injury or death. Only MOS 51R,
52C, 52D, 52G or a qualified civilian must perform this procedure.
1. Open the circuit breaker panel doors (1).
2. Set all circuit breakers (2) to OFF.
3. Disconnect power from the power entry panel (3).