the string calculator I used did not "say" which controller to go with you pick from a drop down box and i used the MPPT 45 amp TriStar model.
In doing that it show what I copied above, that three strings in one module would work fine. that is what i think would be the best solution for me and these panels.
the 235 watt 60 cells are like $325 bucks each.. the 195 watt panels are $195 dollars which save me $125 per panel x 3= $375 which will almost buys the 45amp mppt controller at $420, and thanks for the link to that..
I may mount them in a way they can be tilted if needed as well.
thanks for all the info.
smkettner wrote:
Try Grape Solar 235w 60 cell panels in the string calculator.
It will say to go with MPPT-60 but I don't think it is needed flat on the roof.
The 45 is fine even though the nominal wattage exceeds the recommended maximum.
