by Cage on Sun Nov 16, 2014 9:05 am
I think I'm getting down to the nitty gritty with the dual battery set-up for my camper trailer to run an EvaKool 55L fridge, some low output lighting and a charging point for phone etc.
I'll be using the CTEK D250S Dual DC/DC charger and a Fullriver 120AH AGM battery in a lockable toolbox mounted on the trailer mudguard.
I've decided to do the wiring myself and have read umpteen dozen threads, here and elsewhere, on the right cable to use, with 'experts' proclaiming that you need anything from 6mm Auto cable to 2B&S cable, with the general consensus being that for long runs (mine will be about 12m) 6B&S is the minimum to counter voltage drop.
One seller was offering a ready made kit with 50amp Anderson plugs and a 60amp circuit breaker, and with my very shaky understanding of this elecktrickery stuff it seems to me that the Anderson plug would go into melt down before the circuit breaker tripped.
While doing my price searching I've noticed that 4B&S cable is not that much dearer than 6B&S cable and that is what I've decided to use, with an 80amp circuit breaker at each battery, or would 50amp be better, and 120amp Anderson plugs. The Tycab 4B&S cable is rated at 108amps at 30°C.
I'll use a 50amp Anderson plug to pick up the lead from a solar panel to the D250S charger.
This set-up may be over-kill but I'd rather err that way than the other.
Any comments from those knowledgeable in the auto electrical field would be much appreciated.
Thanks
Kev