Quote:
Originally Posted by Joenavy85
my Jeep has a 135 amp alternator, and that is maximum capacity. 135A x 12V = 1620 Watts (i'm leaving out losses due to wire size/length/material etc., to keep it simple). if you can eliminate 100 Watts from your total load that equates to ~6% of total alternator capacity. this won't help a whole lot when you're trying to figure fuel consumption, but you can get an idea of how much of an effect you are having.
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Most alternators have a fuse of either 50 or 60 amps, you never use any where near the full capacity, or even get close to the full rating of the fuses of your alternator, it's kind of like saying that your car can go 120mph so how long does it take you to get home from work?