Wagan 2007-2, User Manual, Page: 12 / 22

INVERTER
Safety Ground
6V
220Ah
Fuse(s)
Fuse(s)
6V
220Ah
6V
220Ah
6V
220Ah
6V
220Ah
6V
220Ah
+
–
+
–
+
–
+
–
+
–
+
–
3000 Watt AC Inverter by Wagan Tech
12
Continuing with the previous example, the 150 amp load will need to run for 10 hours, so
we begin configuration with a 1,500 Ah battery. If the vertical is 1,500 and the horizontal is
150 amps, the percentage of load on the battery is 10%. The curve shows that the 1,500 Ah
is derated to 90% of maximum. This means that the battery will have to be 16,500 Ah for
the full 10 hour run time. It is important to add some extra battery capacity, because as the
batteries age they will lose Ah capacity.
Configurating The Battery Bank
Six volt, 220 Ah “golf cart” batteries were selected for these illustrations because they are
generally readily available and relatively inexpensive. They are deep-cycle type and with
regular recharging they have a relatively long life. These batteries are “flooded” type; they
freely vent hydrogen and oxygen while under charging and heavy discharge. They must be
vented to outside air to prevent accumulation of explosive gases.
Battery Bank Diagram
The diagram below shows inverter connections to a battery bank with recommended fuse
protection.
R
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