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Old 03-18-2003, 05:40 PM   #1 (permalink)
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quick question please help
if my amp is 250 watts rms 2x125 what size fuse (amp) do i need by the battery?
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Old 03-19-2003, 07:40 AM   #2 (permalink)
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Heres the equation

Total RMS power x 2 = Total power usage

Total power usage/battery voltage = Current draw

Add about 10% and use the closest fuse size.

Comes out to be 20 Amps about.
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