"None of these houses are grounded." - ehhh?

[olefin]

@danceswithcats

If you’re in a structure where the device boxes are grounded as I’ve described, you can remove the old two prong duplex receptacles, install a green grounding pigtail from the back of the device box (one or more holes there can be tapped to accept the machine screw) to the grounding screw terminal on the duplex receptacle, and you will have greatly improved the quality of the ground.

In my case there were no ground wires to anything including the boxes.

But I wasn’t aware that a GFI would work without a ground until **Q.E.D. posted. ** Never to old to learn. :smack: