My First PWM Solar Run
Well, I guess you could say I lost my solar charging virginity... finally. :) Two 140w 12v Poly panels, in parallel, manual tracking, Isc 8.15a (x2), Voc 22.4, 50' (one way) of 6awg cable to Solar3...
Forum Discussion
jrnymn7 wrote:Yeah, shorter will be better. 7% is really a high loss. I went with a DIY combiner box, made from an EMT LB and some buss bars. I ran 4ga. welding cable from that to the controller. My disconnect is a CB manual reset breaker. Truthfully, I didn't measure for voltage drop since I have such short runs and big wire. I had in mind that 235W was not going to be my endpoint. I see a lot of guys that are adding or plan to add in the future. I tried to keep that in mind.
"Yes, you will need to remove the connector bottle necks, the adaptors"
West,
That is yet to be seen. The big losses were thru the cables themselves, and the 30a CB near the cc input. I will be reducing the cabling down from 50' to about 30', once installed, so that should help considerably. And I need some way of connecting to the 6awg, so I don't see any alternative?
One solution to getting the higher voltage (I'm assuming this will be for equalization) may be to use a buck/boost device. You probably have the amps to get by with that.
