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Subject:Re: Iraggi alternators
From:Mike S
Date:Sat, 28 Jul 2007 18:58:26 -0400

At 05:30 PM 7/28/2007, Geza Polony wrote...
>The question of how much energy they require to turn is paramount, of
>course.

200 amps @ 13.4v ~= 2.7 KW. That's about 3.6 horsepower, but
alternators certainly aren't 100% efficient. 50% is a reasonable
assumption (there are alternators which do better than that), so call
it a power rob of about 7 HP.