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400W on stock alternator?

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Old 05-26-2011, 07:35 PM
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Default 400W on stock alternator?

Can I run (4)100W KC Halogen lights on a stock alternator?
Old 05-26-2011, 07:49 PM
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The conversion of Watts to Amps is governed by the equation Amps = Watts/Volts

For example 12 watts/12 volts = 1 amp

http://www.powerstream.com/Amps-Watts.htm
Old 05-26-2011, 08:06 PM
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Originally Posted by HCCAFan
The conversion of Watts to Amps is governed by the equation Amps = Watts/Volts

For example 12 watts/12 volts = 1 amp

http://www.powerstream.com/Amps-Watts.htm
I know how to figure out my amps. What I don't know is if my stock alternator and take the 33amps.
Old 05-26-2011, 08:19 PM
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Easily less you have anything else big drawing on it.
Old 05-26-2011, 08:21 PM
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Originally Posted by HCCAFan
Easily less you have anything else big drawing on it.
Ok, Thanks. All that I have currently is a 4W CB and a 400W power inverter which I dont use all the time and never to full capacity so I should be fine.
Old 05-26-2011, 08:52 PM
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400w on a 12 volt system is only about 34 amps. Stock alternator is a 120a unit so like previously said unless you have some other heavy loads you should be more than fine.
Old 05-26-2011, 08:59 PM
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Im running 4 130 watt Daylighters with 2 Hella 500's @ 55 watts a piece. I have no problem running them but if your just sitting at idle with high beams hellas and daylighters on they brown out a little bit. And I have the stock 118 amp alternator.
Old 05-26-2011, 10:22 PM
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Awesome! Thanks everyone.
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