Mandalay 2006 Presidio, Manual

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The electrical power supply provided for the motorhome is a dual operating system with 110
volt AC and/or 12 volt DC.
The 110 volt power may be provided by either connecting the motorhome to an outside power
source when parked, or by use of a motorhome generator. When the 110 volt system is
operational, power also passes through a system inverter, allowing the full use of all 12 volt
functions in the motorhome.
110 volt appliances in the motorhome include the refrigerator, ice maker (optional),
air conditioning, TV's, VCR, DVD player, microwave oven, inverter, washer/dryer (optional),
and water heater. The refrigerator and water heater also have the option to run on LP Gas
when 110 volt is not available. All other lights and functions are supplied with 12 volt power.
When it is not possible to access 110 volt power, the 12 volt system functions can be
supplied by the coach batteries. The chassis battery is protected by a battery isolator
controller to prevent discharge from excessive electrical consumption when motorhome is not
running. The coach batteries are recharged by the power inverter when the motorhome is
attached to an outside 110 volt power source, or by the generator when it is running, and by
the chassis alternator when the chassis engine is running.
A 50 amp shoreline power cord is provided to connect the motorhome to a grounded external
power source. The shore cord is located in a compartment on the roadside of the motorhome
behind the rear wheels. There is a porthole in the bottom of the compartment to allow the
power cord to be in use while leaving the storage compartment door closed.
If 50 amp service is not available, connect the proper electrical adapters to the shore cord.
Only UL approved adapters are to be used. The most common adapter is a 50-30 amp
adapter. Always connect the adapter to the shore cord prior to making the connection to the
outlet. Never use a two-wire extension cord, a cheater adapter with the ground pin removed,
or install a lower amperage plug on the power cord in place of the molded plug.
When connecting or disconnecting from a grounded external power source, always turn off
the shore power breaker to the power supply outlet. This will prevent accidental shock and
flashing of electrical contacts. After connecting the motorhome to the grounded external
power source, wait a few minutes for the inverter/charger to stabilize charging of the batteries
before starting large AC loads such as the air conditioners.
7-1
2005 PRESIDIO
ELECTRICAL SYSTEMS
SHORE CORD