Almost all pop up's use a voltage of 120 volts and can plug into
a 30 amp receptacle with a RV shore -line cord. This is normally
connected to a power converter that converts 120 volts to 12 volts
DC to operate lights and ect and even charges your RV battery.
In addition the converter contains normally 2 circuits of 120 volts
to operate your appliances and outlets. DO NOT ALTER THE
CONVERTER !!! I have heard of replacing the factory breakers
with twin breakers so they can get two more additional circuits.
I DO NOT RECOMMEND THIS !! This will cause the converter to
produce heat and will call for a early retirement of you converter.
Most converters have a 20 amp and a 15 amp circuit to power up
your appliances. This will enable you to run 2 - 1500 watt heaters
and some small appliances. A 13,500 btu AC and small appliances.
One 1500 watt heater and water heater and very few small appliances.
YOU CAN NOT RUN 3- 1500 WATT HEATERS!! Just do your math and
you can figure it out. Amperage is the key to unlocking the capacity
of you pop up camper. Look at the following examples.