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Electrical system and batteries
he coach’s system has been designed and installed in accordance
with the safety requirements of ANSI Standard A119.2 and the
National Electric Code. Any changes,
additions and/or
modifications that you make may develop
a hazardous condition. Be sure to consult your local authorized
dealer for advice concerning changes or additions.
IMPORTANT NOTICE:
Anyone making a change, an
addition and/or a modification to the electrical system is
assuming the full responsibly of any consequences.
Do not alter; make changes, additions and/or modifications to the electrical systems.
Doing this could lead to a hazardous condition resulting in you or someone being
seriously injured or killed.
ELECTRICAL SYSTEM BASICS
To provide your motorhome with electrical power for both camping and traveling there are three different electrical
systems. There is 12-volt DC (direct current) Automotive System, a 12-volt DC (direct current) Coach System and a
120-VAC (alternating current) Coach System. The 120-VAC system requires use of an external source 120-VAC
outlet, a generator, or inverter. This section focuses on the Coach Electrical System
.
12-VOLT DC AUTOMOTIVE SYSTEM
The battery(s) provided by the chassis manufacturer supplies the starting power to the engine and power for the
automotive lights, etc. Review the chassis manufacturer’s manual for operation, care, and maintenance.
Never switch the 12-volt deep cycle coach battery with an automotive battery.
12-VOLT DC SYSTEM
An on-board deep cycle marine type battery(s) supplies the power for your accessories while you are traveling,
camping, or when a 120-VAC hook-up is not available. This system provides power for most of the coach lights,
the water pump, furnace, radios, vent fans, and sometimes the refrigerator. Never switch the automotive battery
with the deep cycle coach battery
.
120-VAC SYSTEM
To use this system, you need a 120-VAC power source or an inverter. A shoreline (extension cord) can be used to
plug into a properly rated outlet at the campsite or home or if available on-board electrical generator. When you
provide a 120-VAC power source, the electrical system will work the same way as it does in your home. You
will be able to run the items such as your toaster, microwave, televisions,
sweeper, roof air conditioner, some lighting and other items that require the 120-VAC power to operate.
INVERTER
An inverter converts12-volt DC from the batteries to 120-VAC to run a limited number of items that need 120-
VAC. It also controls the 12-volt power for recharging batteries when 110 is present from shore power or from the
generator. Some units are inverter only and the battery charge will come from a separate converter charger. The
chassis alternator does not run current through the inverter when charging house batteries.
WARNING
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