three-prong plug
Standard electrical termination
A three-prong plug is an electrical plug with three metal pins—two flat blades for current and a round grounding pin for safety.
The grounding prong connects equipment to earth ground, reducing shock risk if wiring fails.
Standard in North American outlets since the mid-20th century: The old lamp has a two-prong plug, but modern appliances use three-prong plugs.
- wall outletFixed electrical socket
- outletPoint of release
- socketHollow receiving cavity
- groundedStable and realistic
- ground wireConductor to earth
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- plugs and socketspower outlet, wall socket, ungrounded, grounded