Generator
DC 12 VOLT
SYSTEM
8 • 292
2004 • LaPalma
The AC system power requirement for the motorhome is 120/240 Volt AC
single phase. This can be either 20 amp, 30 amp or 50 amp service. Ensure
the power distribution panel is configured to handle the load. If shore power
service is available connect the motorhome to the shore power source using
the supplied shore power cord. The shore power cord plugs into the shore
power source and can be “dog boned” to the smaller receptacles. The
motorhome shore power cord is located on the road side of the motorhome
and is permanently attached.
NOTE: In many instances 50 amp shore service is not available
and care will have to be used when operating the appliances and
using the outlets so as not to overload the shore power service
being used.
The generator can be selected for use when AC shore power is not
available. The motorhome’s on-board generator has limited 120 Volt AC
power output capabilities. The generator’s maximum amount of output power
is specified in watts, which is calculated at an elevation of 500 feet above sea
level. The figure will decrease with a higher altitude. Temperature also
affects total maximum output. Fuel consumption is based upon a percentage
of AC electrical load applied to the generator. While using the generator care
will have to be taken when operating appliances and outlets so as not to
overload the generator. The generator is fueled from the main fuel tank.
A majority of the lighting and appliances are designed to operate from 12
Volt DC (direct current) power. This is why the batteries play such an
important role in the function of the motorhome. There are exceptions with
appliances such as the microwave or television. The chassis functions
(engine, transmission, dash air, etc.) are also 12 Volt DC.
With the all technological advancements taking place in the past several
years, manufacturers have now incorporated electronics into these systems. It
is important to keep the 12 Volt system(s) in good working order. These
systems, with their incorporated electronics, are voltage sensitive. Some
items can be damaged if the DC voltage is not maintained within the
designed specifications.
Electrical Systems
Shore Power
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