BFL13 wrote:
Need a scenario. Say a tree branch falls on one of your RV roof panels and smashes it all to heck. Perhaps somehow a cell gets shorted.
Cells are all in series with each other, so hard to figure how a short can occur with pos and neg touching. But even if a cell is shorted, what will happen? Shorting the whole panel is harmless. That is how you measure Isc and Voc.
If the panel shorts the other two panels feed current through. If the panel fuse rating is 15 amps and you push 20 amps through the short (10 amps x2 panels) they you might get some heat.