Personne ne me l’avait jamais expliqué !

the outlet, leaving the live prongs exposed. If a conductive object like a metal tool, paperclip, or jewelry accidentally falls between the plug and the outlet, it could contact the energized prongs and cause a dangerous short circuit or shock.

With the grounding pin positioned on top, it is the first to make contact when plugging in an appliance. This means that if a metal object slides downward, it is more likely to touch the grounded pin before reaching the live terminals, providing a safer path and reducing the risk