Lithium battery charging in FW of truck
Can someone please explain. 2015 F350 alternator 200-220A, wire to rear of truck not clear on gage but about 20’, wire from plug to FW batteries 15’ or more supposedly protected by 30A fuse. I se peop...
Forum Discussion
BFL13 wrote:
PT says 1/3 for running so 220/3 = 73 amps and the 60 will pull 90, so the 40 pulling 60 seems right. But that needs a wire upgrade from the 7-pin's.
I put an on /off switch on the "ignition" wire that goes to a 12v source in the camper, not the truck. I have the 20 amp DC-DC with 7-pin input. It does great with constant 20 amps, and pulls maybe 30 amps which the 7-pin can handle ok, and also the alternator at 1/3.
ya I am planing on runing a couple of 2 or 4ga wires to a special plug in with a signal wire hooked to my upfitter switch so I can turn it off or on from the cab of the truck. what I am trying to figure out is if I can just buy one and mount it un the truck and use it for both the 5th wheel and camper or if I have to buy two. I know it should be as simple as going to a larger wire size to reduce voltage drop. if I go 2ga that should be less than a 1% voltage drop over 20 feet if I am dealing with the 40 amp output rather than the 60 amp input. I am trying to find a voltage drop chart that shows less than 1% but having a hard time.
Steve
