This article references the "All American 5" AM Broadcast receivers so popular in the '50's but is applicable to any device with a "hot" chassis:
https://antiqueradio.org/safety.htm I've replaced the power cable on my junkyard AA5 with a 2-wire cord, just like the original, but I marked both the back panel's AC connector and the plug to indicate proper polarity so that when I plug it in to a properly wired outlet the chassis side is connected to the white, or negative AC line. But I still keep my fingers out of it... On Thu, Aug 8, 2019 at 2:43 PM Hy Chantz <cha...@well.com> wrote: > When I was a mere boy : ) CQ Magazine had an article called "The 22 > Watt Monster". It was a low-power CW transmitter, whose schematic featured > a grounded chassis and a one-wire plug. It took me a LONG time after > pondering it to understand how it worked.... > > 73 > > W2HY > > ----- Original Message ----- > From: "Wilson Lamb" <info...@embarqmail.com> > To: donro...@hiwaay.net > Cc: boatanchors@puck.nether.net > Sent: Thursday, August 8, 2019 2:20:34 PM > Subject: Re: [Boatanchors] Article on changing from 2 to 3 wire power cords > > And I thought I'd seen everything!!! > That's a new one. > WL > ----- donro...@hiwaay.net wrote: > > I recall listening to my uncle's shortwave radio and there was a > > ground wire going outside and to the metal plumbing pipe. The AC > > cord only had one blade on the plug. I think I was a teenager before > > I understood how that worked. > > Don W4DNR > > _______________________________________________ > > Boatanchors mailing list > > Boatanchors@puck.nether.net > > https://puck.nether.net/mailman/listinfo/boatanchors > > _______________________________________________ > Boatanchors mailing list > Boatanchors@puck.nether.net > https://puck.nether.net/mailman/listinfo/boatanchors > _______________________________________________ > Boatanchors mailing list > Boatanchors@puck.nether.net > https://puck.nether.net/mailman/listinfo/boatanchors > -- Frank Barnes W4NPN Chapel Hill, NC Grid Square FM05 Cell 919.260.7955 _______________________________________________ Boatanchors mailing list Boatanchors@puck.nether.net https://puck.nether.net/mailman/listinfo/boatanchors