View Single Post
Old 09-23-2010, 09:32 PM   #14 (permalink)
Left Lane Ecodriver
RobertSmalls's Avatar
Join Date: Aug 2008
Location: Buffalo, NY, USA
Posts: 2,257

Prius C - '12 Toyota Prius C
Thanks: 79
Thanked 284 Times in 197 Posts
ShadeTreeMech: An alternator is about 50% efficient, so if your fan draws 20A (275W), that's a 550W accessory load. You can use the calculator to turn it into a percentage if you like.

You definitely don't want the fan running ALL the time, because it is a pretty big draw.
  Reply With Quote