Thanks MEX. I meant panel to controller fuses. Reading your post puts me back onto the confusion train. LOL! If you had a shorted panel in a parallel string, wouldn't the max amps just be the Isc of that panel? Which can happen in normal operation and that wouldn't be a problem. If you shorted two parallel strings together, now you have one series string which would up your Voc but drop your amps big time which might fry your controller but not your wiring. Still don't understand the point of extra fusing on panels to controller.
