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It looks amazing, but I have a few questions. My machine produces14.5Volts when the motor is at speed, so that would be around 40amps pull at 580Watts using P=VI. Did you install the alternator? Did you buy special rocker switches and other hardware as most of the rocker switches I see are 20Amp? I haven't seen any 40Amp switches but haven't specifically searched for that.

Just curious because I was looking at two row, but was worried the power draw would be too much.

 

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P=VI is only for resistive load, not LED. Bar draws under 10 amps

I am not sure I understand the resistive load comment, if you could explain that more I would appreciate it. Did you put the bar on a power supply separate from the machine to measure the 10amp pull?

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If you look at that light bar it is 240Watts and pulls 18.2Amps at 12V which is very close to the P=VI ---- 218.4 Watts = 12V * 18.2Amps My guess is the bar is rated for 240Watts but won't fully pull that amount of power.

I will run a test tonight with a small 12 inch light bar and see what I get. I have a power supply and can measure the current pull and not use my machine. I know my R1 3ft light whips pull 5 amps each (10 amps total) when they are white color at 14.5Volts. It surprised me how much current they pulled.