Originally Posted by Joe Monstermaker
I did that too, with two GM CS130 alternators, on my "Land Yacht". I also installed cables and a switch to allow both batteries to be connected in parallel, for self jump starting or charging in case of failure of either alternator.
The alternators are effectively connected directly together when I hit the switch. I experimented with it and found that they work together just fine and share the load.
that's interesting. I was curious before about how trucks that come from the factory, like older ford plow trucks, were able to have dual alternators.
i am also a big fan of having dual separate alternators on a bus. On my last bus, the aux alternator was 24 volts. The advantage is that at that voltage it only takes half the current to run high amperage loads, like a 3K watt inverter.
i plan to repeat that setup on my next bus.
they were both gm 1 wire alternators, and oddly enough they were identical housings.