Electrical System - Regal 3300 Owner's Manual

CHAPTER 4

ELECTRICAL SYSTEM

The standard electrical system on board uses a low voltage system called
direct current (DC for short). It is referred to as DC because current
flows one-way in the circuit.
Always use caution when operating and maintaining the 12V
DC electrical system. Improper use of the electrical system may
cause a fire or explosion, which could result in death or serious
injury.
Direct Current (12 volt DC)
Batteries are the heart of the onboard DC electrical system. The system
consists of two group-24 wet-cell type batteries for the engine-cranking
circuits and one group 31 for the house circuit.
The engines require large reserve amounts of battery power for starting
purposes. Check the maintenance chapter for battery specification
information.
Batteries supply the power to crank over the engines and to operate
the electrical equipment through the engine charging system. The dash
voltmeter displays the battery voltage. If the voltmeter shows below
12 volts there could be a charging system malfunction. This condition
needs to be investigated before the batteries become completely
drained.
Never switch off the batteries from an engine while it is running.
Doing so will damage the charging circuity of the engine.
4-8
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WARNING
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