Solar Panel Disconnected from SUN
I am planning installing 4X140W panels(parallel)flat mounted going to 15A breakers(so they can be switched off if needed) to the charge. The panel have ISC of 7.50 each times 4 equal 30. The controlle...
Forum Discussion
BFL13 wrote:
Ok so 480w flat is lots of solar. My single 230w tracking does all our needs (big inverter, the works) and if flat instead of tracking that 230w would be like having 369w flat where and when we camp. 480w flat is 111w more than that, so you have tons of solar.
That means you don't have to extract every drop out of your solar to get by, there is lots of margin. Which means any "extra" you would hope to get by going MPPT is not needed. You already have lots of "extra" So whyinheck pay big bucks for enough MPPT to run those four panels? Crazy
You are like the guy who got an extra panel for his PWM instead of going MPPT because it was cheaper that way to get the extra.
So IMO the two eBay PWMs is still the way to go and you even get redundancy out of the deal.
This... get a pair of Ebay Solar 30's PWM's, one for each pair of panels, have the margin, and call it good.
