Solar questions
I'm mounting three 210 watt Newpowa panels on my 30'Class A motorhome. I'm using Renogy Z brackets to mount them to my fiberglass roof. The panels are pre drilled to accept 8 of these brackets. Do you...
Forum Discussion
CA Traveler wrote:
I recommend 8 ga which will provide higher voltage to the controller and allow for another panel if desired.
If wired in series, yes. Higher voltage, lower amps, can use thinner cable.
This was my reason for wiring 2*250W in series, using (very common, cheap and easy to work with) 10 GA cable. Total input 70V, most 30-40A controllers allow at least that much. The OP will find several times more 10 GA solar cable on the market than 8 GA, especially if he needs it with MC4 connectors. Now, 6 GA sounds like a pain, MC4 for it probably don't exist, will need an ugly junction box on the roof.
