Thread: AMP draw
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Old 03-29-2012, 01:40 PM   #6
Super73
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Join Date: Nov 2007
Location: Bay Area, Ca
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Re: AMP draw

Power is somewhat simple. Amps * volts = watts assuming no loss is calculated.

So your 6al is 14.4v * .7a * 6 = 60.48 watts at 6k rpm
You ignition is creating a high voltage but low amperage output to jump the arc the plug.
60.48w / 30,000v = .002a
60.48w / 60,000v = .001a

The thing a lot of people don't think about is how amperage goes up when voltage goes down. If something uses 432w (14.4@30a), it needs that same wattage. What happens when the voltage drops? 432/12.2=35.4a if your wiring, relay, and fuse are not considered here, well you have a big problem.
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