Portable panels wire size
Hey guys, I need some help. Would you consider giving me some advice please? I’m putting together a portable solar panel setup. The panel’s will be the following. Max Power: 140Wp Open Circui...
Forum Discussion
pianotuna wrote:
Hi Almot,
Unfortunately going above 15.4 volts can play havoc with the control boards in a modern day RV. There has to be a finite limit to voltage.
Didn't think about that. Never late to learn, eh?
With my particular batts the Absorb should've been 15.4V at freezing point, but I don't camp where daytime temps are at or below freezing. Another good news is that Absorb is not reached until at least a few hours after the sunrise, and by then temps are higher. I realize that this can be a problem in winter in prairies.
Then the OP is alright with input voltages (after the wire drop) as low as 15. There will be some additional drop in the controller, so the output won't exceed 15.
My controller allows setting all kinds of voltage limits though.
