"Comteck" bravely wrote to "All" (11 Feb 05 02:46:39)
--- on the heady topic of " Question about reversed-polarity in an AC
outlet"

Co Subject: Question about reversed-polarity in an AC outlet
Co Xref: aeinews sci.electronics.basics:5591
Co First of all, I'm not sure what you mean by "the good old days". DC
Co is very widely used today.

Co Secondly, AC does have a hot and a neutral. You can buy AC testers at
Co Canadian Tire. It's looks sorta like a pen with a single plastic
Co blade on the end. If you stick the blade into the hot side of a
Co receptacle, the light will turn on, but if you put it on the neutral
Co side, it will not.
Co This simple test proves that, even though there is no plus and minus
Co with AC, there is still a polarity.


All it proves is one line is referenced to ground. If you try this
with 240vac both slots will light up that type of tester.

A*s*i*m*o*v

.... :) What does that wire do? =8Q (oh!)