A power outlet, also known as an electrical socket, is a device that allows electrical appliances to connect to the electrical supply in a building. It provides a point where electricity can flow from the wiring in the walls to the appliance, enabling it to operate. Power outlets come in various types and configurations, depending on the country and the specific electrical standards. Typically, a power outlet has two or three holes for prongs from a plug, which is attached to the appliance's power cord. Common household items like televisions, computers, and kitchen appliances rely on power outlets for their operation. Safety features, such as grounding and circuit breakers, help prevent electrical hazards.