grounded outlet



  • An electrical outlet, which in addition to the current-carrying contacts, has a third contact which serves for connection to a grounding conductor. Devices and equipment which are to benefit from this safety feature must have an appropriate three-prong plug which is inserted into this outlet. There are other possible arrangements for such outlets, including the use of lateral grounding contacts which make contact with metallic strips on the side of the plug. Also called by various other names, including grounding outlet, ground outlet, grounded receptacle, grounding receptacle, grounded socket, safety outlet, or three-prong outlet.
  • synonymground outlet
  • synonymgrounded receptacle
  • synonymgrounded socket
  • synonymgrounding outlet
  • synonymgrounding receptacle
  • synonymgrounding socket


  • An electrical outlet whose polarity-type receptacle includes both the current-carrying contacts and a grounded contact that accepts an equipment-grounding conductor.