Outlet

An outlet common to the Americas.
(1) Front view of the outlet without a cover. (2) Side view of the outlet without a cover. (3) Incoming circuit wiring for the outlet. (4) Outgoing circuit wiring for another outlet that is connected in parallel.

Outlets allow alternating current appliances to be safely connected and disconnected. Outlet design varies between countries, but the overall concept remains the same is the same: there are either two pins (a circuit) or three pins (a circuit plus ground). As outlet design varies between countries, the proper method for wiring and installing outlets will vary from location to location.

Considerations

• Outlets typically have multiple connection points for both wires of a circuit - this allows outlets to be easily connected in parallel.
• Outlets should always be installed in a junction box or other type of enclosure to ensure that all live metal parts are protected. If they are going to be installed outdoors, they must be installed in a suitable outdoor rated enclosure.
• If a system has an AC system ground then an equipment ground must be run to all outlets and the outlets should have three pins in order to provide a ground for user safety.
• Outlets should not be installed in locations where they will be exposed to water or else a residual current device must be installed to reduce the risk of electric shock.
• Ensure that all wires are properly attached to the outlet by tugging on them after tightening the screws on the outlet.