Outback Power FX and VFX Series Programming Manual
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3. OutBack Series
•  2-10 FXs are wired to two 120VAC output legs producing 240 VAC between them.
•  This system requires an FW-X240 or PSX-240 Auto Transformer.
•  240VAC can be produced on one leg if the load is ten amps or less; an FX on one leg can power 
loads on the other leg, helping to balance loads. 
•  The AC input source (generator or grid) must be 240VAC between both legs.
4. OutBack Series/Parallel 
•  Unique to OutBack, the loads are balanced between two 120VAC legs, changing between series and 
parallel as needed.
•  An FW-X240 or PSX-240 Auto Transformer is required to balance the loads.
•  This system allows for larger AC loads without overloading either of the FX 120 VAC outputs; it also 
allows for 240 split-phase using only one FX.
3 kW 120 VAC
6 kW
120 VAC
Leg 2
LOAD
6 kW
120 VAC
Leg 1
3 kW 120 VAC
12 kW
240 VAC
Leg 1
and 
Leg 2
or
3 kW 120 VAC
3 kW 120 VAC
X-240
3 kW 120 VAC
3 kW 120 VAC
LOAD
6 kW
240 VAC
Leg 1
and 
Leg 2
or
3 kW
120 VAC
Leg 2
3 kW
120 VAC
Leg 1
X-240










