batteries in place of generator

[Dorn Hetzel]

1500 amps would be an amazing amount of alternator! At 12 volts that would
represent 18000 watts, at 13.5 or 14.2 volts even more than that. I hope
they had a huge engine, at reasonable efficiencies that would probably suck
30 or 40 HP at full power I don't think I need that much, that would be
50% more than the whole 12kw generator!

Regards,

Dorn Hetzel
77FC35
Hogansville, GA

On Dec 18, 2007 4:43 PM, Ryan Wright wrote:

> On 12/18/07, Dorn Hetzel >
> wrote:
> >
> > and 3600 watts = 30 amps at 120v. I've never worried about running an AC
> on
> > a 30amp shore hookup.
>
> You won't have 3600 watts available. Your existing alternator is
> probably ~150 amps give or take and you're using a good portion of
> that to run coach systems. So to be safe, your "extra" capacity is
> only another 150 amps. Further, a 300 amp alternator does not
> necessarily put out 300 amps, at engine idle speeds it might only put
> out 180, perhaps less.
>
> Someone has done this - set their coach up to run one A/C unit off
> their inverter while cruising. I want to say they used a 1,500 amp
> alternator to ensure enough power. I recall it was very expensive, in
> the two thousand dollar range. Perhaps someone who knows more about
> this will chime in.
>
> At the end of the day, Dorn, to do this "right" I suspect you're going
> to have more money invested than if you'd just bought a brand new
> generator or had your own repaired/rebuilt.
>
> -Ryan
> '86 PT-40 8V92
>
>


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