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<blockquote data-quote="caraudio93" data-source="post: 7611925" data-attributes="member: 633518"><p>Figure out what voltage your car idles at, whether its 13.8 or 14.4 volts, and divide 3000/14.4 and that gives you your amperage. Watts = Volts x Amps... So supposing that your car idles at 14.4, 3000/14.4 = 208, So you would need a 200amp alternator to run your system... However, you could probably be fine with a lower amperage alternator and a couple extra batteries. Hope this helps</p></blockquote><p></p>
[QUOTE="caraudio93, post: 7611925, member: 633518"] Figure out what voltage your car idles at, whether its 13.8 or 14.4 volts, and divide 3000/14.4 and that gives you your amperage. Watts = Volts x Amps... So supposing that your car idles at 14.4, 3000/14.4 = 208, So you would need a 200amp alternator to run your system... However, you could probably be fine with a lower amperage alternator and a couple extra batteries. Hope this helps [/QUOTE]
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