Electrical Outlet — receptacle that provides power

An electrical outlet is a receptacle device that allows appliances and electronics to plug into a building's electrical system.

Electrical Outlet diagram — labeled parts, dimensions, and installation context

What It Is

The outlet is the user-facing connection point on a branch circuit. It receives a plug and delivers power to lamps, chargers, appliances, and other equipment.

Different outlets are rated for different amperages, voltages, locations, and protective features. GFCI, tamper-resistant, and weather-resistant outlets all serve specific safety purposes.

Types

Common types include standard 120-volt duplex outlets, GFCI outlets, AFCI-protected outlets, 240-volt appliance receptacles, USB-combination outlets, and weather-resistant exterior receptacles.

Where It Is Used

Electrical outlets are used throughout homes in living areas, kitchens, bathrooms, garages, laundry rooms, and outdoor spaces. Their type and spacing depend on the room and the code requirements.

How to Identify One

Look for a receptacle face with one or more plug openings mounted in a wall, floor, ceiling, or appliance connection box. Test and reset buttons indicate a GFCI-style outlet.

Replacement

Replacement is needed when the outlet is cracked, loose, discolored, no longer grips plugs tightly, or stops working reliably. Buzzing, heat, or intermittent power are signs it should be checked quickly.

Electrical Outlet — FAQ

What is the difference between an outlet and a switch?

An outlet supplies plug-in power to a device. A switch opens or closes a circuit to control a light, fan, or receptacle.

Why does my outlet feel loose when I plug something in?

The internal contacts may be worn out. A loose-gripping outlet should be replaced because poor contact can create heat and arcing.

When do I need a GFCI outlet?

GFCI protection is typically required in places where shock risk is higher, such as bathrooms, kitchens, garages, basements, and outdoors. Local code and circuit layout determine the exact requirement.

Can I replace an outlet myself?

Some homeowners do basic receptacle swaps, but the circuit must be de-energized and wired correctly. If the box has multiple cables, aluminum wiring, or signs of damage, an electrician is the safer choice.