Indeed, but it appears that they way they are arranged/wired is not necessarily always 'thought through'. Many moons ago I experienced a situation in which (in response to a very small and very localised fire), firefighters used one of those "fireman's switches" (there were many, 'zoned') in a hospital, and the main effect was to cause a big generator in the basement to automatically fire up and restore some power to the part of the building in question!Many places have a fireman's switch that turns off the supply to things like petrol pumps and illuminated displays. Maybe something similar should be built into solar panels.
Kind Regards, John