Section 4
4-10
460 Express Series
DC Master Panel
The DC master panel consists of a voltmeter, ammeter, a battery test
switch, a series of switch type and resettable circuit breakers, a
generator start switch, and the DC main circuit breaker.
The meter is a convenience feature which allows you to check on the
condition of the three batteries. With master breaker switch in OFF
position, turn battery test switch to:
• STBD - to check the starboard engine cranking battery
• PORT - to check the port engine cranking battery
• GENERATOR - to check the generator cranking battery
• HOUSE - to check the house batteries and
• OFF - to disable meter and test circuit
The switch type circuit breakers’ function allows you to manually
enable or interrupt a circuit by moving the switch on or off, and they
protect the system receiving the DC power by automatically opening
the circuit should a short or overload condition occur.
The resettable circuit breakers protect the system receiving the DC
power by automatically opening the circuit should a short or overload
occur.
OPERATION OF DC SYSTEMS
Read through the table on the following page(s) to familiarize yourself
with the DC systems on your yacht.
CAUTION
DO NOT reset a breaker which has been automatically
tripped without first discovering and remedying the
cause of the problem.
A
DANGER
A glowing red polarity light indicates a reversed
polarity electrical shock hazard exists and damage to
appliances will occur. DO NOT use shore power while
red light is ON. Disconnect the shore cord and have
the shore outlet serviced by a qualified electrician
before using.
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