An electrical outlet, also known as a socket, is a common feature in modern homes. The most common type is the duplex socket outlet, which has two identical outlets. Outlets have three holes: one for hot, one for neutral, and one for grounding. Special outlets called ground fault circuit interrupter (GFCI) are used in wet areas to prevent electric shock. The National Electrical Code covers outlet installation and placement, and homeowners should hire a licensed electrician to ensure compliance.
An electrical outlet is also known as a socket. A power outlet is an electrical outlet with one or more outlets installed. Most modern homes have power outlets. The most common of these is the duplex socket outlet. It has two identical outlets, usually stacked on top of each other.
Most homes have dozens of outlets and most of these are grouped into outlets. The most common outlet used in the United States is 120 volts. This socket includes three holes.
A small rectangular hole conducts electricity through the plug to the powered device. This is known as the hot crack. The other rectangular hole is neutral. The two rectangular holes are placed parallel to each other. Below these an arc-shaped hole takes the lower prong of the plug, which grounds the device.
The common outlet outlet consists of two or more of these 120-volt outlets. The sockets are inserted into the wall and connected to the building’s electrical system. They are then covered with a plastic or metal plate so the wires are not exposed. Never remove the cover or insert anything but a standard 120-volt plug into an outlet without first turning off the power to that outlet and using a current meter to verify that the outlet is not live. Electric shock can cause heart attack or even death.
Special sockets are used in bathrooms, kitchens and other wet areas to prevent electric shock. These special outlets are called ground fault circuit interrupter (GFCI) outlets. They have standard three prong sockets. Between the two sockets are two buttons: a reset button and a test button. If the GFCI outlet detects that the incoming current is not equal to the outgoing current from the circuit, it will shut down, thus preventing the flow of electricity to any device plugged into the outlet.
Because outlets present a risk of electric shock and fire, the National Fire Protection Organization covers outlet installation and placement in the National Electrical Code (NEC). While the code itself is not part of United States domestic law, many individual states mandate that it must be followed. Before installing or changing any outlet or electrical system, the homeowner should always check the electrical code laws for his or her area. The best way to make sure all rules are followed correctly is to hire a licensed electrician.
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