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Blackfin 272 - 6.7 DC Circuit Protection

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61
E lec tric a l S y stem
6 . 7 D C C irc uit P rotec tion
General
Power is distributed to most of the 12 volt acces-
sories through individual “push to reset” circuit
breakers located the helm and battery switch
breaker panels. A heavy duty, main circuit breaker
near the battery switches protects the system
from an overload. Other heavy duty circuit break-
ers in the helm breaker panel protect the main
circuits for the windlass and stereo amplier.
There could also be circuit breakers or fuses for
the ignition systems, auxiliary charging circuits,
power steering assist pump and the optional in-
verter. Circuit protection will vary with the engines
and options selected.
Some 12 volt accessories are operated directly by
the circuit breaker or fuse. Switches fed by the cir-
cuit breakers or fuses activate other accessories.
Accessory Breakers and Fuses
Circuit breakers or fuses are labeled for the acces-
sory circuit they protect. Circuit breakers labeled
ACC are reserved for additional accessories not
usually installed by the factory.
Helm Accessory & Main Circuit Breakers
A . A c c essory “P ush To R eset” C irc uit B rea k ers B . H ea v y D uty M a in C irc uit B rea k ers
If an accessory breaker trips, the reset button
pops out and can be felt through the silicone pro-
tective cover. Press the button to reset the tripped
breaker. If the breaker trips again, nd and cor-
rect the problem before resetting the breaker.
If a fuse blows, it must be replaced with a fuse
of the same amperage as the original. The fuses
are labeled and some are color coded. Never try
to correct a problem with a 12 volt accessory
by installing a larger fuse. This could cause the
accessory or circuit with a problem to overheat,
which could result in an electrical re.
C AU T I O N
PROPER FUSE OR BREAKER PROTECTION MUST BE
PROVIDED FOR ALL 12 VOLT EQUIPMENT ADDED. DO
NOT OVERLOAD THE ACCESSORY CIRCUIT BREAKERS
OR OTHER CIRCUITRY THROUGH ADDITIONAL 12 VOLT
EQUIPMENT.
Heavy Duty Main Circuit Breakers
DC Power is distributed to accessory breakers,
windlass and other main circuits through heavy duty
A
A
B

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