I have 12 230w Canadian Solar CS6P Panels, 4 strings of 3 into my combiner box.
I seem to be only producing around 800w on very sunny days and far less than that on overcast ones.
Full sun, 800w-890w…
I had my panels running in 3 strings of 4 last summer with no problem and was producing about 1.8kw max, but this winter it triggered the input over voltage warning on my Growatt 12kw. MPPT open voltage is 145v.
CS6P (my panels)
VOC is 36.8v
So 36.8x4=147.2v
36.8x3=110.4v (in the clear)
I guess I have several questions
Did the cold weather increase my voltage due to less resistance from heat therefore putting my panels over my charge controllers rated voltage? (I have a rather long run from panels to my charge controller so there’s some voltage drop.)
Why am I consistently maxing out at 800w. Is it my panel setup?
Could it be my MC4 cables I crimped the connections on and I did a subpar job?(I needed to make more cables to setup my 1 more string.)
It’s 9pm now, so the sun went sleepy-time.
Tomorrow I’ll have the exact input voltage and amperage to post. Maybe I’ll try it in strings of 4 again.
Always appreciate the help
I seem to be only producing around 800w on very sunny days and far less than that on overcast ones.
Full sun, 800w-890w…
I had my panels running in 3 strings of 4 last summer with no problem and was producing about 1.8kw max, but this winter it triggered the input over voltage warning on my Growatt 12kw. MPPT open voltage is 145v.
CS6P (my panels)
VOC is 36.8v
So 36.8x4=147.2v
36.8x3=110.4v (in the clear)
I guess I have several questions
Did the cold weather increase my voltage due to less resistance from heat therefore putting my panels over my charge controllers rated voltage? (I have a rather long run from panels to my charge controller so there’s some voltage drop.)
Why am I consistently maxing out at 800w. Is it my panel setup?
Could it be my MC4 cables I crimped the connections on and I did a subpar job?(I needed to make more cables to setup my 1 more string.)
It’s 9pm now, so the sun went sleepy-time.
Tomorrow I’ll have the exact input voltage and amperage to post. Maybe I’ll try it in strings of 4 again.
Always appreciate the help