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All we had before the solar system was the 3 kVA generator that came
with the house to supply power during outages. It is 20 years old
and VERY loud. We'll still use it now, but only during the
day. The neighbor's will appreciate that. If we have an
extended outage and don't have any sun, we can start up the generator
and use it to recharge the batteries.
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This picture shows the balancing autotransformer that turns the 240
volts that comes out of the generator into the 120 volts that the
inverter wants. You could just connect one of the generator's 120
volt outputs to the inverter, but you would only get half of the
generator's output into the inverter.
The plug at the bottom of the picture is where the generator plugs
in.
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This picture shows the generator connected to the autotransformer.
I wired it in to the box where the generator was originally
connected. The original wires went to a circuit breaker in what is
now the critical panel.
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I connected the original wires from the generator plug through the
sheetrock to the right-hand box and then out the the lower flex conduit.
It carries power from the generator balancing
transformer to the second input of the inverter.
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This shows the AC bypass switch mounted above the inverter. The
generator's power comes into it through the bottom of the two diagonal
gray flex-conduits. I goes through the bypass switch box and
into the inverter's generator input.
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