Originally Posted by Paul Sampson
If you run your main engine wile the 110 charger is on from either gen or dock side it can damage your reg and or alt
I can't imagine how this would be an issue either - the alternator/regulator could care less if there is 14.1V at the battery - that's what they're set to put out anyway. If this was a problem, we'd all have to turn off our solars before starting the engine, which I can pretty much guarantee no one does.
Back to the original question - the alternator on a diesel
generator just replaces the small amount of energy used to start the engine and attempts to fully charge the battery. It makes no difference how you do this. There's nothing magical about energy coming from a particular alternator compared to anywhere else - solar
, battery charger, whatever. No need to be spinning more stuff than necessary. Commercial
boats typically don't have alternators on their propulsion
engines, for instance.