Re: Silent transfer switch?
Reply #27 –
A hum from the ATS is totally unrelated to chassis battery charging. The ATS is part of the 120 VAC system and allows only one source of 120 VAC at a time-- either shore power or generator.
From the factory, there is no means of charging the chassis batteries from 120 VAC, only the alternator. Have you or a previous owner added a charge device to keep the chassis batteries charged.
OR, are you saying they don't charge from the alternator with the engine running?