I have 7 305w/40VOC panels I need to wire for a Classic 150 charge controller---all my arrays are Series but I have the Classic and want to use it...Never wired paralell beforeHow would I wire it...Thx,appreciate it..
If you want all 7 cells in parallel (NOT recommended), connect all the negatives together and connect all the positives together.
What are you trying to do? Making a series and parallel configured array is hard with 7 panels. 6 and 8 panels can be arranged to work with your 150V max input voltage SCC.
You could use 3 40Voc panels in series, twice with the two strings connected in parallel (3S2P). This leaves 1 panel unused.