The GFCI outlet is mounted to the outside of the home with a plastic protective cover. I want to plug a 2 prong adapter for a Ring Camera extension cord into this GFCI outlet. The two prong adapter block will not plug into the GFCI outlet. I suspect it is because the outlet requires the male plug to have a ground as well as it appears anything plugging into a GFCI outlet has to have all male parts(including the ground) be the same length in order to open the closed gates at the same time on the GFCI outlet. I have ordered 2 different extension cords 15amp. On both cords, the ground is longer than the blades and so the gates on the GFCI outlet will not open. Looking for solutions without rewiring.

  • 3
    Longer ground prongs are standard. Do not use safety receptacles/outlets, but my understanding is they use the ground going in first to open the gates. Pictures of the plugs and outlet please.
    – crip659
    Commented Sep 12, 2023 at 18:13
  • Just keep trying with the 2-prong until it finally goes in.
    – Ecnerwal
    Commented Sep 13, 2023 at 12:58
  • Is it a tamper proof outlet?
    – Huesmann
    Commented Sep 13, 2023 at 14:30

1 Answer 1


Your GFCI outlet probably has anti-tamper shutters inside the two power & neutral slots. If your outlet does not have a shutter in the ground hole it is probably like mine.

My GFCI anti-tamper outlets do not require a 3-prong plug. A two prong plug will go in. You just have to get the pressure exactly balanced and coordinated on the two-prong plug. Both prongs have to hit the shutters at exactly the same time to get the shutters to open and let the plug in.

A brand-new outlet may require more pressure than usual on the ground plug.

  • 2
    Look for TR in a box outline on the outlet - that will indicate that it's tamper resistant. The proper phrasing for that, IMHO, is "use resistant", but... maybe that's just me.
    – FreeMan
    Commented Sep 12, 2023 at 18:41
  • Like many things, some seem to be well made and work as they should, and others can't seem to tell the difference between a legitimate plug and a 3 year old with a paperclip. But I guess even those protect the 3 year old, until they get ripped out for being useless to people with actual plugs they've tried 20 times without the [expletive] outlet permitting it to go in.
    – Ecnerwal
    Commented Sep 12, 2023 at 22:19

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