I agree with others, why complicate this?
Connect the water heater to a breaker on the AC panel. You can turn it on when on shore. We never ran it from an inverter, it would draw too much, but we did run it using a Honda generator.
Install a 12v heating element. If your water heater has only one element, then you can get a new element that has 110v and 12v connections on it.
I prefer the Flexcharge over the C60 since it dumps the load directly from the wind turbine instead of the batteries.
Don & Diana
sv Re Metau an HC33t
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