Hey there, I'm in the late stages of designing a 4.5KW (18x250) solar array and am unclear on the best way to combine these pre charge controller.
I'll be running a Victron MPPT250/100 with 6 panels per string (223.2VOC) (6.7a) and i need to know the best way to combine these into one feed.
1. Have a DC isolator on the end of each string and parallel each of these isolators together on the roof?
2. Bring the three strings down form the roof into the solar room and combine them on a bus bar in a combiner box?
3. something else?
thank you very much in adcance for your help.