APU Automatic Load Shedding
In flight, if the APU is the only source of electrical power, all galley busses and main buses
are automatically shed. If electrical load still exceeds design limits, both IFE busses are also
automatically shed. On the ground, the APU attempts to carry a full electrical load. If an
overload condition is sensed, the APU sheds galley busses and main busses until the load
is within limits. Manual restoration of galley and main bus power can be attempted by
moving the CAB/UTIL Power Switch to OFF, then back ON.
