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12-Volt DC System
Most interior lights and appliances receive 12-Volt DC power through
converter output and/or the auxiliary battery. Exterior lights and brakes
also use 12-Volt DC power from the tow vehicle battery and/or auxiliary
battery through the seven way connecter and wire attached to the tow
vehicle. Following are explanations of various items.
Converter
The heart of your 12-Volt DC system is enclosed inside of the load center,
including 12V fuse panel, 120V breaker panel and converter.
Fuse panel has 6 or more 12-Volt DC fuse positions, depending on output
size of your converter. These fuses are mostly 15 amp in size. 30 amp
12-Volt breaker is for slide out if so installed. A 40 amp fuse is also in load
center for protection should a battery be installed backwards.
All converters have solid state electronic components internally to
produce “clean” 12V DC power.
This load center will have a brown plastic front.
The function of a converter is to take 120-Volt AC power and transform
this energy into 12-Volt DC clean power. Converter then performs as
follows through fuse panel:
1. Supplies power to the lights in coach.
2. Supplies power to all appliances as required for operation.
3. Provides charging voltage for optional battery if so installed.
No manual switches are needed or required for this operation.
Each converter has a “built-in” fan which operates through a load sensor
control or temperature sensor. As more current is drawn, fan will speed
up, run faster, or slow down, based on amp draw and/or temperature.
Should the fan not run at all, the converter may overheat and will cut-out
and/or stop.
Auxiliary Battery
All coaches are pre-built to accept an Auxiliary Battery, which is not
provided by manufacturer of your coach.
Recommended batteries are of deep-cycle type as you need longer, slow
consuming power rather than cold-cranking power. A battery is always
required for a break-away switch to function during towing, as per state
laws.
A battery requires routine maintenance for long life. First, terminals need
to be kept clean to avoid corrosion. Second, a battery used daily will
consume water as long as the converter is in operation. Be sure to check
the battery no less than every 30 days and keep the battery filled with
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