CESSNA SECTION 7
MODEL 208B 867 SHP AIRPLANE AND SYSTEMS DESCRIPTION
GARMIN G1000
U.S.
ELECTRICAL SYSTEM (Continued)
EXTERNAL POWER SWITCH
The EXTERNAL POWER switch is a three-position guarded toggle-
type switch located on the left sidewall switch and circuit breaker panel.
The switch has OFF, STARTER, and BUS positions and is guarded in
the OFF position. When the switch is in the OFF position, battery power
is supplied to the main bus and to the starter-generator circuit, external
power cannot be applied to the main bus, and, with the generator
switch in the ON position, power is applied to the generator control
circuit. When the EXTERNAL POWER switch is in the STARTER
position, external power is applied to the starter circuit only and battery
power is supplied to the main bus. No generator power is available in
this position. When the EXTERNAL POWER switch is in the BUS
position, external power is applied to the main bus and no power is
available to the starter. The battery can be connected to the main bus
with external power connected to the airplane by placing the BATTERY
switch to the ON position. The battery charge must be monitored to
prevent a overcharge condition.
CIRCUIT BREAKERS
Most of the electrical circuits in the airplane are protected by pull-off
type circuit breakers mounted on the left sidewall switch and circuit
breaker panel. Should an overload occur in any circuit, the controlling
circuit breaker will trip, opening the circuit. After allowing the circuit
breaker to cool for approximately three minutes, it may be reset
(pushed in). If the breaker trips again, it should not be reset until
corrective action is taken.
Make sure all circuit breakers are in before all
flights. Never operate with tripped circuit breakers
without a thorough knowledge of the
consequences.
208BPHCUS-00 7-97
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