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ARCTIC STAR OPERATING MANUAL
NW Explorations
5.4.1
Inverting
When the system does not have 120-volt AC input from shore power or the generator, the
Magnum unit will invert 12-volt DC power from the battery to 110-AC power for selected
circuits including:
•
Port and Starboard outlets
•
Microwave
•
Icemaker
Inverting power has a cost; DC power is
consumed to invert to AC power. Inverting from
DC to AC is not 100% efficient and the higher the
power demand, the less efficient inverting
becomes. Using high load demand appliances
such as the coffee maker, microwave or hair
dryer will have a noticeable draw on the house battery bank however charging electronic
devices such as cell phones and tablets will not have a significant impact although several
devices all charging at the same time can add up. It is surprising how much power is required
for making a pot of coffee in the morning. When using the inverter consider the load that is
required for each device and after you have had your cup of coffee, monitor the voltage level of
the batteries and consider starting up the generator. The table below lists the power demand of
the various appliances on board.
Device
Power Required (DC amps)
Computer
25
Coffee maker
100
Hair dryer
84
Microwave
84
Toaster
100
If the LCD light indicates a fault you will need to consult the Magnum Remote
Control Owner’s
manual to determine the best remedy to a specific fault.