Forum Discussion
KD4UPL
May 12, 2019Explorer II
What transfer switch do you have? What inverter do you have? They do not all operate the same way. Do you actually have an inverter/charger? If so, and it's actively charging your batteries that would explain the fans cycling on. Some transfer switches have latching contactors that don't use power except to transfer. Some have AC coils on the contactors that hum. Some have DC coils with a rectifier to drive them so they don't hum.
I don't understand why you would disconnect the batteries when plugged into shore power. I would leave them connected so they are kept on a float charge; assuming a good quality charger that is set properly for your batteries.
I don't understand why you would disconnect the batteries when plugged into shore power. I would leave them connected so they are kept on a float charge; assuming a good quality charger that is set properly for your batteries.
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