Originally Posted by cardude01
I was hoping I could mount these controllers down below near the battery box, so I would not have very easy access to them. That was the reason for wanting something that would connect to a smart phone app.
Isnít it preferable to mount a controller close to the batteries?
For these panels is number 10 wire OK to run to the controller? What size wire do you run from the controller to the batteries?
If you install parallel controllers then the maximum current will be about 25A for each, so 10 gauge will be fine if the controller is within a couple of feet of the batteries, but if one single controller then at 50A you need #6 to keep the voltage drop to less than a tenth of a volt.
You will need to wire your single or dual controllers to a fuse block within 6" of the battery to meet ABYC. From the fuse block to the batteries use #6. Use a 60A fuse.