Alternator size and electric cooling fan
Okay guys, I'm thinking of running an electric cooling fan. I've read all the posts here and at PT (much like JimM has be poring over the disc brake info). Wiring is not an issue; my American Autowire Classic Update harness has a dedicated fused circuit for an electric cooling fan. My question is more on the current required.
My electrical engineering course was a long time ago, so I am just struggling with some of the basics.
I have a Dave Ray HEI (12 volt, don't know the amp draw off the top of my head), normal stereo (25W x 4 RMS, I think), and factory lighting. I'm going to add Billy Morris' driving lights, but they shouldn't add too much.
Right now I have an OE replacement 10SI, 63A alternator. The Spal fan I'm looking at (30102049, 16" single puller) draws a max of 19A. I don't have the ratings for my wiring harness here, but I think the fan circuit is 25 or 30A fused.
Lots of info (sorry) to get to one simple question: how do I know if the alternator I have will be enough? Seems to me I can just add up all the loads, but I guess I'm not sure how to do that.
It's real simple, but electricity is not my strong suit.
69 'vert project big block/TKO 600 RR
68 'vert driver RS clone -- gone!