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aaaahhhhh sorry bout that.
somewhere on this site is the horsepower calculator. It is a pretty good one. You plug in car size, weight, speed,etc, and it tells you how much horsepower it takes to cruise at steady speed.
From there, a horsepower is about 750 watts, and a watt is a volt times an amp.
So, lets say it takes 10 horsepower to cruise at 75 mpg. that would be 7500 watts.
If you are using a 100 volt system, that means 75 amps. If you are using a 48 volt system, that means 150 amps.
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