Just as a data point, the house I grew up in was built around 1952 and used the two equally sized outlets. Seems the addition, added on in or about 1961 used the three pronged outlets. I also remember buying lamps in 1977 that had two equally sized prongs, something you won't see today.
Dave Rossetti Sent from my Verizon Motorola Droid On Aug 7, 2019 11:42 AM, LARRY PICARD <[email protected]> wrote: > > I live in an older home. > Before the knob and tube wiring was replaced a number of years ago, the > original electrical outlets had only two slots and they were both the same > size. > Does anyone know when three prong plugs and polarized plugs and their > respective receptacles came into use? > _______________________________________________ > Boatanchors mailing list > [email protected] > https://puck.nether.net/mailman/listinfo/boatanchors _______________________________________________ Boatanchors mailing list [email protected] https://puck.nether.net/mailman/listinfo/boatanchors
