P/N 11934-003
7-69
Cirrus Design
Section 7
SR20
Airplane Description
Serials 1005 thru 1581:
80A fuse.
Serials 1005 thru 1581:
100A fuse.
Serials 1359 and subsequent with SRV optio n
: The airplane is equipped with
a single alternator, dual battery electrical system. This configuration is identical
to the dual alternator system except components used in conjunction with the
secondary alternator are removed.
NOTE
STARTER
50A
50A
125A
EXTERNAL
POWER
BAT 1
SWITCH
LANDING
LIGHT
LANDING
LIGHT
SWITCH
15A
30A
ALT 2
SWITCH
BAT 2
SWITCH
AVIONICS
ESSENTIAL
RELAY
AVIONICS
NON-ESSENTIAL
RELAY
AVIONICS
SWITCH
BAT 1
RELAY
FUEL
OIL
ALT 1
ALT 2
PITOT
HEAT
ESSEN
T
IAL
DI
S
T
MAI
N
D
IST
25A
25A
25A
25A
25A
VOLT REG
ALT 2
F
B
ALT 1
F
B
100A
40A
VOLT REG
GPS 2
ANNUN/ENGINE INST
MASTER CONTROL UNIT
CIRCUIT BREAKER PANEL
TURN COORD. #1
AVI
O
NI
CS
ESSENTI
AL
BAT 2
ALT 1
SWITCH
LOW
VOLTS
ATTITUDE #1
HSI /PFD #1
STALL WARNING
BATTERY 2
ALT 2
ESSENTIAL POWER
ESSENTI
A
L
AUTOPILOT
AVIONICS
COM 1
GPS 1
FUEL PUMP
TURN COORD. #2
M
A
IN
BUS
2
ATTITUDE #2
HSI /PFD #2
CABIN LIGHTS
ALT 1
STARTER RELAY
NON-
ESSENTI
AL
AVI
O
NI
CS
NON-
ESSENTI
A
L
MAI
N
BUS
1
PITOT HEAT/
COOLING FAN
12VDC OUTLET
STROBE LIGHTS
NAV LIGHTS
FLAPS
SKYWATCH/
TAWS
COM 2
ENCODER/XPONDER
WEATHER/
STORMSCOPE
AUDIO PANEL
MFD
AVIONICS
FUEL QTY/HOBBS
INST LIGHTS
PITCH TRIM
ROLL TRIM
ICE PROTECTION
SR20_FM07_1722B
Figure 7-13
Electrical System Schematic
Revision A5
Summary of Contents for SR20
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