One particular solution for resolving this example is taken in Poland, exactly where CEE seven/five sockets are generally installed in pairs, the higher (upside-down) a person possessing the "French" polarity along with the reduced a single obtaining the "Czech" polarity, so the user can choose what to plug exactly where. https://finnajpvz.fireblogz.com/60691897/considerations-to-know-about-types-of-electrical-plugs-uk