Solar Kit
Just received my kit. 2 100w panels with a 30a pwm controller. Hoping it will recharge my 2 GC2's. I am alone in the trailer and power use is min. Any thoughts?
Forum Discussion
NinerBikes wrote:
I bet you could use your existing charge controller with adding a 40 watt solar panel, and still have enough head room. Change out the gauge wiring to 12 or 14 gauge and you have plenty capacity.
What I would do is add the 40 watt panel. Wire all three panels in parallel to some sort of junction box. Run 14 gauge wire the 20 to 50 feet to your charge controller, which you took off the back of the portable panels and remounted inside your Class C, close to the batteries. Run 10 gauge wire from the controller to the batteries, no more than 4 or 5 feet worth. Calculate V loss for the 5 feet of 10 gauge wire, and compensate at the charge controller to get around 14.8v at the battery, not what the charge controller reads, that's going to a solve for "X" voltage at the to account for line losses to get 14.8V at the batteries. Might be .2 V might be .3 V, might be even .1V
Excellent lowest cost solution, Niner. I've ordered the Solar30 controller off ebay so will probably do the same with a 100 watt panel. The junction box may fit where the 10w controller came off.
