This guy say's it best. I printed it out and keep it in the bathroom. Musta read the thing like 100x's before I started to understand it and BAM... it's sooo simple.
I'm using two trojans (6v) and one trojan (12v) set on a switch using the intelli-power 9180 (80amp) output. I just finished the rewire of the whole trailer. I was down to the frame so it was easy to run the wire. I redid the 12v
DC panel using a breaker system from West Marine ( Blue Sea Systems).
The panel is now in the front, and the intelli-power is also in the front. Very nice set-up with cd,dvd,17"JVCflatscreen, xm radio and 500w JL 4c amp. Ran the system today for the first time and had it all working pretty hard and ran it off my two 6's for about 12-15min, and the fan didn't even come on the intelli.
Radio is way to loud for an A/S but...... louder is better right. I switched most of the lights to the cold cathodine tube lights. The're not that brite even when they heat (if you can call it that) up. They use like no power though.
That website say's all you will ever need to know and more.