Textron Cessna Grand Caravan Ex 208B Pilot's Operating Handbook And Faa Approved Airplane Flight Manual page 171

CESSNA
MODEL 208B 867 SHP
GARMIN G1000
ELECTRICAL
MALFUNCTIONS
GENERATOR OR MAIN BUS MALFUNCTIONS
Illumination of the amber GENERATOR AMPS annunciator indicates 1
of 2 conditions:
1. The current load on the generator is above its rated value for
that flight condition. The pilot should reduce the electrical load,
or change flight conditions.
2. The reverse current protection of the ACU has failed. If the GEN
AMPS indicator is below -10 amps, the pilot should disconnect
the generator from the electrical system by setting the
GENERATOR switch to the TRIP position.
The electrical power distribution system consists of a primary power
distribution bus in the engine compartment which receives power from
the battery and the generator, and two (No. 1 and No. 2) main power
buses located in the circuit breaker panel. The main buses are each
connected to the power distribution bus by three feeder cables. Each
feeder cable is protected by a fuse link and a circuit breaker. This
multiple feeder system provides automatic isolation of a feeder cable
ground fault. If one of the three 30-amp feeder circuit breakers on either
bus opens, it should be assumed that a feeder cable ground fault has
been isolated, and attempted resetting of these breakers prior to
troubleshooting is not recommended. The electrical load on the
affected bus should be maintained below the remaining 60-ampere
capacity.
FAA APPROVED
208BPHCUS-00
EMERGENCY PROCEDURES
POWER
(Continued)
SECTION 3
SUPPLY SYSTEM
(Continued)
U.S.
3-55