Re: OT How much HP to run the alternator, fan, water pump, and AC compressor?


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Posted by Beb (76.14.83.65) on 19:40:28 03/30/11

In Reply to: Re: OT How much HP to run the alternator, fan, water pump, and AC compressor? posted by OnBelay

Depends on many factors

Those percentages are good ball park

Like a 70amp alternator will require way less HP than a 200amp alternator

Or when just the front AC is on vs both front and rear are on

Or if you have over sized tires and the power steering pump has to work harder during power steering maneuvers

Or when my severe duty fan clutch is idle vs fully coupled

Just look at what is feeding off of the serpentine belt and calculate their wattage draw



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