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From: rsd@sei.cmu.edu (Richard S D'Ippolito)
Newsgroups: rec.ham-radio,sci.electronics
Subject: Re: Powerline voltage too high, power co working on it
Keywords: 128V!
Message-ID: <9780@fy.sei.cmu.edu>
Date: 5 Dec 90 19:02:39 GMT
References: <114172@philabs.Philips.Com>
Reply-To: rsd@sei.cmu.edu (Richard S D'Ippolito)
Organization: Software Engineering Institute, Pittsburgh, PA
Lines: 26

Excerpts from article <114172@philabs.Philips.Com> by Robert Casey:

 >I've had a little adventure with the powerline voltage at my parent's
 >house.  About 6 weeks ago, I was at my parents', and for some reason, I
 >measured the powerline.  (Now I remember, an old powerline volt monitor
 >meter I had in the hamshack room seemed to be reading high.  Must be
 >broken, get out a good digital meter to check the voltage.  Oh, 128V!

 >Guy leaves, a few hours later, calls. "try measuring the voltage" "Still too
 >high, 127V."  

 >We like to set the voltage at 120V at houses."


Yeah, but not too high by much...

The typical electric utility tariff (what the utility must provide under its
contract with your state government) calls for 120v +/- 5% at your meter, or
114-126 volts.  You can't really complain about 126 volts.  Also, a 'good'
digital (or analog) meter will not necessarily give an accurate reading, as
most of them are average-responding, rms-reading, because if there are a lot
of solid-state power controls on your feeder, the AC waveform can get fairly
chopped up.


Rich


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