Tiffin Motorhomes 2015 Allegro, Owner'S Manual

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ELECTRICAL FEATURES
GENERAL INFORMATION
There are two electrical systems in your Allegro motorhome. These are the 12-volt DC (VDC) system
and the 120-volt AC (VAC) system. Most standard appliances require the 120-VAC system, while the
majority of the lighting systems used in the Allegro use the 12-VDC electrical system.
The electrical power for the 12 VDC system is supplied by the batteries of the Allegro. Those batteries
are charged by a power converter. The alternator also charges the batteries when the engine is running.
The electrical power for the 120 VAC is supplied by the power cord when the Allegro is connected to
an external power source or when the on-board electrical generator is in operation. The converter/
inverter can also supply 120 VAC electrical power (to limited outlets and limited appliances)—the in-
verter transforms the 12 VDC electrical power from the batteries into the 120 VAC electrical power for
the basic appliances.
To connect the Allegro to an external source of 120 VAC electrical power, it is first recommended that
all of the circuit breakers are in the “off” position. This is done to prevent any power surge upon con-
necting the motorhome to the external power source. Then unwind the power cord from the electrical
compartment located in an external compartment. The standard, flexible, power cord supplied with
the Allegro is designed to handle up to 50 amperes. Make sure that the pins in the male end of the
plug are oriented correctly so they match the power cable, and they are in good condition (i.e., aren’t
bent or damaged).
If there is a circuit breaker switch at the “plug” end of the power cord, that breaker should be turned
“off” before making the connection. Insert the plug into the mating outlet and then turn the circuit
breaker “on.” Close and lock the electrical compartment door to protect the contents and to keep them
clean and dry. Close the cover on the power box, if so equipped, to avoid an unintentional disconnec-
tion and to keep the contents clean and dry. Then switch the main breaker to the “on” position.
When properly connected, the 120 VAC system provides power to all the 120 VAC circuits and outlets
when the main breaker is turned “on.”
CAUTION
Failure to turn off the 120 VAC appliances
when starting or stopping the generator may
damage the transfer switch and/or electrical
appliances.