hi all, I've checked the threads and can't find an answer so perhaps someone can assist me. I have 4x 190w pv array (760w) total to charge a 24v 150ah battery bank. These are the specs:

Pmax-190 (24v)

Vmp-36.6v

Voc-45.2v

Imp-5.2a

Isc-5.62

i want to configure them in parallel to give me the following:

760w

36.6v

20.8a

by these calculations (if correct) the total amps (as represented by the Imp of 5.2a x4=20.8a)gives me the output current of the array (+25% =26a for extra light/reflections etc)

So I determining the right mppt charge controller am I correct in assuming the 26a output is related to the max amp a CC can take? IE: a 30a model like the tristar 30 or MidNite solar the kid?

The reason I'm confused is because I've read that to find the right amp CC you should take the total watts of the system (760w) and divide by the battery bank voltage (24v)

760/24=31.6a +25%=39.5a

significantly higher than the current at Pmax (20.8a) requiring a larger CC.

any ideas?

Pmax-190 (24v)

Vmp-36.6v

Voc-45.2v

Imp-5.2a

Isc-5.62

i want to configure them in parallel to give me the following:

760w

36.6v

20.8a

by these calculations (if correct) the total amps (as represented by the Imp of 5.2a x4=20.8a)gives me the output current of the array (+25% =26a for extra light/reflections etc)

So I determining the right mppt charge controller am I correct in assuming the 26a output is related to the max amp a CC can take? IE: a 30a model like the tristar 30 or MidNite solar the kid?

The reason I'm confused is because I've read that to find the right amp CC you should take the total watts of the system (760w) and divide by the battery bank voltage (24v)

760/24=31.6a +25%=39.5a

significantly higher than the current at Pmax (20.8a) requiring a larger CC.

any ideas?

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