2013 King Aire Diesel Pusher
by Newmar
72
Shore Power Cord
The “shore power” cord supplies electricity to the coach via the connection at the campground
post.
Generator
The generator supplies AC current to your coach when running. You generator is hard wired into
the “Automatic Transfer Switch”, which routes power into the breaker box and beyond to the
accessories it powers.
Inverter
The inverter is designed to invert DC power from the house batteries into AC to operate the
applicable appliances and accessories. The inverter also has a charge circuit that will recharge the
house batteries when AC is present from the shore power cord or generator.
Incoming AC Power
The incoming power from the generator or shore power cord is routed to the main breaker panel.
The source is selected by way of an “Automatic Transfer Switch”. When 110 VAC is present on
the incoming legs, the Automatic Transfer Switch will select that as the power source, and will
switch automatically to it.
IMPORTANT
If power is supplied to the system by both the Genset and shore power cord, the automatic transfer
switch will select the generator input by default. By prioritizing the generator circuit, power will always
be available as long as the generator will run, regardless whether there is access to shore power. If
the unit is plugged into a shore power outlet at a campground, and the generator is started, the
automatic transfer switch will default to the generator circuit.
To connect the unit to 110 volt shore power, first make sure all of the breakers are in the off
position. This is done to avoid a power surge. Unwind the power cord from the electrical
compartment. The standard electrical service in this unit is 50 amps with a flexible cord. Check to
make sure the pins in the outlet are oriented correctly, that they match the power cable, and that
they are in good condition. If there is a circuit breaker switch at the plug, it should be turned OFF
before making the connection. Insert the plug completely into the outlet and turn the circuit
breaker on. Close and lock the electrical compartment door to keep the contents clean, dry, and
secure. Close the cover on the power box, if equipped, to avoid an unintended disconnection and
to keep contents clean. Switch the main breaker to the ON position. The 120 volt system will
energize all 110 volt circuits and outlets when the main breaker is turned on.
IMPORTANT
It is important to inspect the shore power cord before and after each use. If the cord or plug shows
any signs of damage, either from abrasion or heat, or if the pins are loose, or the insulation is
damaged or pulled back at all, it should be inspected by a qualified technician for potential
replacement. NEVER use a shore power cord that has exposed wires or signs of heat damage
(melting insulation or cover, misaligned pins, etc.).
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