Combiner box?

[birdman333]

I have an AIMS 3 string combiner box,-Total output amps is 125A, Ea string is 25a, 200volts max. My question is does it work as any other series/parallel combining math and can 1 string be of a different amps and volts from another. Example is first string is 1250watts 188volts 9amps. the second string is the same but my 3rd string is 68volts 12amps. each string works for volts and amps for fuses and max volts but will the combined amps be the total of 9amp and 12amp. 1st and second strings come out to, with 24v battery = 52amps per string for my outback 80amp MPPT controllers, I need 2 at least but the third string throws me off can someone answer this. More info is the 1st and 2nd string are 5 panels ea with 250watts 37.6v and 9 amps in series. 3rd string is 4 panels at 17v and 12amps ea 200watts. With 24v setup its 33amps out. Any help is appreciated.

 

[Supervstech]

Following.

 

[mopat]

I am not sure I completely understand your question. These three strings into a combiner box will not work; with 2 strings at 188 volts and one string at 68 volts, that is. String voltages should be within 5% of each other. It is hard to tell what would happen but my guess is it's not good.

Again, if I understand correctly, you have 14 panels--10 the same and 4 different. Would it be possible for you to arrange two identical strings of 7 and 7? I am not sure what the maximum open circuit voltage of "your" Outback 80 amps MPPT charge controller is.

Hope this helps a bit. Maybe more specific specifications on panels and controller would help the forum assist.

 

[birdman333]

thank you and yes I agree which is why I asked because I'm having (so called expert solar guys) tell me you would then have 440v @ 30amps. So I will stick with what I'm used too. Which is my common sense. Thank you.