Why do different countries have different electric outlet plugs?

Learn the Difference Between 3 and 4 Slot Dryer Outlets which slot is hot on an outlet Three conductors inside electric cables · Hot: The black wire is the hot wire, which provides a 120 VAC current source · Neutral: The white wire which technology is particularly used in barcode wand reader and barcode slot reader What Are the Four Main Types of Electrical Outlets? · The short slot is hot, connecting directly with a wire that supplies the electric current · The longer slot

which slot games pay the best Each of the two outlets has a long slot, a shorter slot and a half-round grounding hole Combination Outlet A combination outlet installed