Quote:
Originally Posted by Bohemian
When the TT is being towed, and the batteries are charging from the TV's alternator, I'm sure there's not a lot of amps involved because the wires in the harness aren't big enough to handle that.
My question is: What is limiting that current? What prevents us from melting wires and blowing fuses? (I know, that's two or three questions.)
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Wire length, size and resistance of the connector, from the front of the TV to the batteries somewhere in the AS will limit the tow charge current flow to from 5 to 12 amps in my experience. I have a digital ammeter with shunt on my Argosy 20' and that allows me to see just what charge current I get.
You can put a much larger wire in the TV, and better connector, and larger charge wire in the AS to get more tow vehicle charge to the AS batteries, but it is a royal PITA to do, and every time you change TV's you have to go through it again.
A good Converter/charger such as a Progressive Dynamics 9245 or 9260 and a generator will do the job better, faster, and easier. I still like some charge from the TV, but have resigned myself to it's limits.