Hi All,
I've yet to install it, but I have a 100W panel which I'm going to mount on the roof of the Drifter to keep the (single) hab battery topped up. The current battery wiring back to the switchboard leaves much to be desired, and looks to be around 10 AWG/6mm2 - the run is about 5m from the MPPT to the battery (as it's underslung in the nearside rear, and the controller will be mid hab on the other side).
I've been toying with the idea of just tapping into that cable for the output of the charge controller, but do I need to up the wiring thickness to 8 AWG or even 6?
According to most calculators, for a 5m run over 6mm2 cable, I'll lose about 1.96%. The panel should put out 8.3A max, so that would be under the 50A cable rating, and even if I add another panel, I should be well within the cable's capability (although the voltage drop would increase to 3.78%).
What size of cable are people using between the MPPT controller and battery/batteries?
Any tips?
Cheers,
S.
I've yet to install it, but I have a 100W panel which I'm going to mount on the roof of the Drifter to keep the (single) hab battery topped up. The current battery wiring back to the switchboard leaves much to be desired, and looks to be around 10 AWG/6mm2 - the run is about 5m from the MPPT to the battery (as it's underslung in the nearside rear, and the controller will be mid hab on the other side).
I've been toying with the idea of just tapping into that cable for the output of the charge controller, but do I need to up the wiring thickness to 8 AWG or even 6?
According to most calculators, for a 5m run over 6mm2 cable, I'll lose about 1.96%. The panel should put out 8.3A max, so that would be under the 50A cable rating, and even if I add another panel, I should be well within the cable's capability (although the voltage drop would increase to 3.78%).
What size of cable are people using between the MPPT controller and battery/batteries?
Any tips?
Cheers,
S.