On Sun, Mar 25, 2018, at 8:29 PM, Gene Heskett wrote: > > On Sat, Mar 24, 2018, at 5:54 PM, a k wrote: > > > I measure supply 120 v ac. > > Thats another problem, the std line voltage has been 127 volts for > several decades. I would at least compare what this one reads against a > known good meter, because either your building wiring is wonkie, or that > meter belongs in the trashbin, thats about a 5% error.
I beg to differ on that. 127V is NOT the standard and has never been. The standard is 120V, with a tolerance of +/-5% at the service entrance and +5/-10% at the load. See this document: https://www.pge.com/includes/docs/pdfs/mybusiness/customerservice/energystatus/powerquality/voltage_tolerance.pdf Or any number of other specs and standards. Or simply look at the nameplate of any appliance or even the top of a light bulb. If you have 127V at your house, you are actually a hair above the +5% tolerance. Maybe your local power company has set the transformer taps a bit high to allow for voltage drop at the far end of the line, and you are stuck with it because you are near the transformer... -- John Kasunich jmkasun...@fastmail.fm ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
