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INSTALLATION OPTIONS
Installation Option 3 for Freedom Marine 25 and 30
The inverter is used in a Dual Input/Single Output mode. The AC loads are split between main
loads and inverter loads. The external sources of AC power can be two different 30 amp
shorepower sources (both neutrals and both “Hots” must be kept separate), or two 30 amp
breakers from a panel fed by a 50 amp 120 volt single phase (3 wire) shorepower source, a 50
amp 120/240 volt split phase (4 wire) shorepower source, or a generator. The charger uses one
30 amp source of power (AC Input #1) and the other 30 amp source (AC Input #2) transfers
through the inverter to the inverter loads connected to AC Output #2. There is no power sharing
between the charger and the inverter loads in this mode.
It is highly recommended that only the lighter appliances and outlet circuits be connected to the
Inverter AC Panel. These loads are supplied power through the inverter in transfer mode, or by
the inverter in invert mode. The heavier loads such as space heaters, stoves, water heaters, air
conditioners, AC to DC converters, or other battery chargers should remain connected to the
Main AC Panel. These loads are only supplied by shorepower or generator power from the main
panel. This split load approach will help avoid problems such as overloading the inverter or rapidly
discharging the battery bank, and eliminates the need to manually manage the energy usage of
these loads when using inverter power.
The inverter AC Input #1 must be supplied power from a 30 amp breaker and neutral in the main
panel and is used to power the charger only. AC Input #2 must be supplied by a second 30 amp
breaker and neutral in the main panel which transfers through the inverter to AC Output #2.
These two input breakers can be supplied by the same phase or as long as the neutrals are
separate, by opposite phases. The inverter AC Output #2 supplies a separate sub panel. The
appliance and outlet loads are then supplied with power from the inverter hot and inverter neutral
bus in the sub panel. AC Output #1 is not used and must be capped off.
If a generator is installed in the system, a break-before-make AC transfer switch is used to
select between shorepower or generator power. The transfer switch AC output is then routed to
the input of the Main AC Panel.
If only AC Input #1 is supplied power, the unit will charge and power share with and transfer
power to the loads on AC Output # 2.
If only AC Input #2 is supplied power, the unit will not charge and will only transfer 30 amps
through to the inverter loads connected to AC Output #2.
