Beechcraft C-12C Operator And Technical Reference Manual page 122

TM 1-1510-218-10
INST INDIRECT
RADIO PANEL
ENVIRONMENTAL
TEMP CONTR
ELECTRICAL
#1 GEN RESET
FLIGHT
RUDDER BOOST
LIGHTS
EMERG LIGHTS
OVHD LIGHTS & EDGELIGHT
PANEL LIGHTS
ENVIRONMENTAL
PRESS CONTR
RADIANT HEAT CARGO
DOOR
ELECTRICAL
#2 GEN RESET
AVIONICS
AVIONICS MASTER CONTR
AVIONICS ANNUNCIATOR
#1 FIREWALL SHUTOFF
VALVE
#1 ENGINE FIRE
EXTINGUISHER
#1 STANDBY FUEL PUMP
CABIN LIGHT
BATTERY RELAY
2-83. DC POWER SUPPLY.
a. Description.
furnishes dc power when the engines are not
operating. This 24-volt, 34-ampere hour battery,
located in the right wing center section, is accessible
through a panel on the top of the wing. DC power is
produced by two engine-driven 28-volt, 250-ampere
starter-generators. Controls and indicators associated
with the dc supply system are located on the overhead
control panel and consist of a single BATT / ON /
RESET switch, two generator switches (#l GEN and
#2 GEN), C D T1 and BATTERY OFF / RESET
2-106
Table 2-10. DC Electrical System
RECOG
LEFT BLEED AIR CONTR
#6 DUAL FED BUS
FLAP CONTR
FLT INST
TAXI LIGHTS
READING LIGHTS – SIGNS
RIGHT BLEED AIR CONTR
COMPASS SWITCHING
TVSI
HOT BATTERY BUS
#2 FIREWALL SHUTOFF VALVE
#2 ENGINE FIRE EXTINGUISHER
#2 STANDBY FUEL PUMP
One nickel-cadmium battery
T2 (Continued)
LANDING LIGHTS
AIR COND CONTR
NAV
CABIN LTS
AUTOMATIC OXYGEN CONTROL
TRANSPONDER EMERG MODE
switch, two generator switches (#1 / #2 GENERATOR)
T2 , and two volt-loadmeters. Refer to Figure 2-15.
b. Battery Switch. A switch, placarded BATT
C D T1 BATTERY T2
control panel under the MASTER SWITCH.
BATT / BATTERY switch controls the dc power to the
aircraft bus system through the battery relay, and must
be ON to allow external power to enter aircraft circuits.
When the MASTER SWITCH is placed aft, the BATT /
BATTERY switch is forced OFF.
c. Generator Switches.
placarded #1 GEN / #2 GEN
, is located on the overhead
Two switches,
C D T1 and #1 / #2
The