Have you ever looked at an electrical plug and wondered what those holes in the prongs are? Hunker has all the answers to ...
Metal prongs on a type-A electrical plug. - JACKREZNOR/Shutterstock Most gadgets and small appliances in U.S. homes have either a Type A or Type B electrical plug, perhaps with a cover to hide cords.
Most gadgets and small appliances in U.S. homes have either a Type A or Type B electrical plug, perhaps with a cover to hide cords. Whether they're two-pronged or three-pronged, their purpose is ...