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Do I need a HO Alternator?
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<blockquote data-quote="sjv13" data-source="post: 7967169" data-attributes="member: 632245"><p>[quote name='&gt;&gt;SQL</p><p></p><p>I have read many of your posts' date=' I can tell you are a smart guy.</p><p></p><p>So please explain how his system would work by just adding a second battery.</p><p></p><p>Op is wanting to run 2 amps</p><p></p><p>1) 400 watt</p><p></p><p>2) 1,00 watt</p><p></p><p>I will go ahead and say his amps will produce that power at 75% efficiency even though I feel 60% would be a more accurate number.</p><p></p><p>1,500 watts / 12 volts / .75 = 166.66 amps of current draw.</p><p></p><p>He has an 80 amp alternator</p><p></p><p>Please correct me if I am wrong.[/quote']</p><p></p><p>Wouldnt you do 1500watt / 12 volts<strong> x 0.75</strong> (instead of divide by .75)?</p><p></p><p>If you're finding 75% of 125 (which is 1500 / 12) then you want to multiply by 0.75</p><p></p><p>When you multiply 1500 x 0.75 you get 93.75 which is quite different from 166.67</p></blockquote><p></p>
[QUOTE="sjv13, post: 7967169, member: 632245"] [quote name='>>SQL I have read many of your posts' date=' I can tell you are a smart guy. So please explain how his system would work by just adding a second battery. Op is wanting to run 2 amps 1) 400 watt 2) 1,00 watt I will go ahead and say his amps will produce that power at 75% efficiency even though I feel 60% would be a more accurate number. 1,500 watts / 12 volts / .75 = 166.66 amps of current draw. He has an 80 amp alternator Please correct me if I am wrong.[/quote'] Wouldnt you do 1500watt / 12 volts[B] x 0.75[/B] (instead of divide by .75)? If you're finding 75% of 125 (which is 1500 / 12) then you want to multiply by 0.75 When you multiply 1500 x 0.75 you get 93.75 which is quite different from 166.67 [/QUOTE]
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