Nobimmer 694 Report post Posted December 2, 2008 What sort of ampage should I be using to wire in an electric fan in an E30? It is 12 inch and 85 watts. That is all the info i can give sorry. Any help would be sweet Cheers Quote Share this post Link to post Share on other sites
Nobimmer 694 Report post Posted December 2, 2008 Anyone? Quote Share this post Link to post Share on other sites
jochen 4 Report post Posted December 3, 2008 What sort of ampage should I be using to wire in an electric fan in an E30? It is 12 inch and 85 watts. That is all the info i can give sorry. Any help would be sweet Cheers 3rd form maths: Watts(W) = Voltage(V) x Current(I) W=85 and V=12 so 85 = 12 x I 85 / 12 = I 7.08333 = I So continuous current at 12V = 7A And continuous current at 14.4V (when battery is being charged) = 5.9A Allowing for some surge current at startup, I would fuse at 2x continuous current, ie use a 15A fuse. Quote Share this post Link to post Share on other sites
Nobimmer 694 Report post Posted December 4, 2008 Man, I would have never have thought I would need that crap Cheers mate Quote Share this post Link to post Share on other sites
