Solar Guppy
Red Cobra Guppy
Use the calculator to have the correct answer. In my array's I run 10 in series, but I'm in Florida an the lowest temperature is about 30F as I'm only 3 miles from the gulf. In general it is always the most efficient to run as high a voltage as possible for the mppt as that is the most efficient for AIO'sOkay. Previously I had all (9) panels in series and ran them through an inline fuse before going into a single MPPT. Was that the right thing to do?
Fuses do nothing for single string solar inputs on AIO's, no need. Most hybrids already have the disconnect switch built in ( my Solis S6 does )