View Single Post
Old 12-12-2009, 12:24 AM   #2 (permalink)
gone-ot
...beats walking...
 
Join Date: Jul 2009
Location: .
Posts: 6,190
Thanks: 179
Thanked 1,525 Times in 1,126 Posts
...you gotta know the AMPS and VOLTAGE being used by the fan, not what the alternator is rated at.

...take both a VOLTAGE and AMPS reading...that'll give you the wattage at that setting, then divide by 746Watts/HP and you'll have a HP value at 100% assumed efficiency.
  Reply With Quote