Portable panels wire size

AStinker- wrote:
I think I will need to have the controller set so it never has over a 14.9 or 15 volt temperature compensated output

You don't set a controller with a temp compensation not to go over certain Absorb voltage. You only set a default 77F Absorb setpoint. Controller will adjust the Absorb voltage downwards when it gets too hot, and upwards (from 77F) when it's cold. If your 77F Absorb is 14.5, you need controller to be able to make ~16V in a cold weather. You don't worry about high input voltage - it will be clipped. But when input voltage is below 16 or whatever Absorb is needed on a cold day, the controller won't be able to raise. So you need the input minimum 16V or so.