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I took apart an outlet for doing some drywall work. I have an outlet that has two black, two white and I believe four grounds. This is where I am confused. One ground should go to receptacle. Should it not? Or do I take the green screw in back of the box and run it into the wire nut with other two ground wires?

  • Can you post a photo of the innards of the box? – ThreePhaseEel Mar 10 '17 at 0:45
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Four ground wires.

  • One to the upstream supply (along with a black and white)
  • One to the downstream load (along with a black and white)
  • One to the steel box
  • One to the receptacle

Works for me.

  • And all four of those should be joined together with a green wire nut. – Michael Karas Mar 10 '17 at 4:25
  • Either a wire nut, or a crimp sleeve designed for this purpose would work. The sleeve is less likely to come apart than the nut, and takes up slightly less space. Useful when space is at a premium. – Jason Hutchinson Mar 10 '17 at 15:37
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    It doesn't need to be a green wire nut. Here at SE we don't discriminate by color, gender or national origin! – Harper Mar 10 '17 at 16:00

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