Tripping solar panel breaker
Last fall I installed two Solarland 180w PERC panels. I had ordered three 100 watt but changed my mind and bought the two 180’s. Unfortunately I didn’t resize my order for the panel breaker which is 1...
Forum Discussion
StirCrazy wrote:Series also has greater shade tolerance/power with panels that have bypass diodes (most have them).
I am looking at changing the controler to a MPPT so I can put them in series. in parralel with a 8 ga wire you are looking at losing up to 0.38V over 10 feet, in series that would be a voltage drop of 0.19. doesnt sound like much but it adds up..
My 3 series 30V panels have 3 bypass diodes, so 10V per panel section. I've seen charging at 20V increasing in 10V increments to 90V due to a leafy shade tree. ie The 20V can be from 2 different panels. Parallel would require sun on the entire panel and hence charging would occur with 1, 2 or 3 panels with sun.
