The final temp depends a lot on how the wire is mounted / insultated
The distance between wire turns and heat loss.
your maths are correct approx 1.1 -1.2mt of wire is needed.
adjust as Itchy suggests IE the shorter the wire the more current (more current = hotter) you will also have to allow for volt drop from the Power supply. use 13.2v for calculations
as current increases voltage will drop slightly but you should be in the ball park.
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Last edited by Swamp Rat; 03-14-2007 at 06:30 PM.