Unfortunately, I do not have the article, and it was before internet (BI). I tried to Google it, but found nothing that addressed an unbalanced load. I don't trust everything I read, but the article was convincing. Enough so, that I remember it well after many years. But, as a boss once told me, "if you don't have it documented on paper, it didn't happen". Put this in the FWIW dept.
Rich, N0CE ----- Original Message ----- From: "Milt -- N5IA" <n...@zia-connection.com> To: "Richard Fjeld" <rpfj...@embarqmail.com>; "elecraft posting" <elecraft@mailman.qth.net> Sent: Monday, August 06, 2012 1:11 PM Subject: Re: [Elecraft] KPA-500 110 or 220? > -----Original Message----- > From: Richard Fjeld > Sent: Monday, August 06, 2012 9:53 AM > To: elecraft posting > Subject: [Elecraft] KPA-500 110 or 220? > > I have read that an Electric Meter (wattage meter) will run up the bill > more if the load is not balanced across the two feeders in the meter. By > running things on 220 Volts when possible, it may help to balance the load > and the meter becomes more efficient for the consumer. YMMV > > Richard Fjeld, N0CE > > ------------------------------------------- > > NOT TRUE!!!!!!!!!!!!! > > The kWh (kiloWatt hour = energy consumed [thousands of Watts] over a > period of time [an hour]) meters are NOT designed in that manner. And, > your Public Utility Commission (PUC) would NOT approve them for use if > they were design defective in that manner. > > PUCs require periodic testing of ALL kWh meters to assure they are > registering power consumed, within the State specified range (typically +- > 1.5%), for loading across a single leg (120 V) or across both legs (240 > V). > > In the past (and where they are still used) the electro-mechanical kWh > meter typically would slowly slow down over time due to wear on the disc > jewels and spindle, or due to dust affecting those same points. Most > meters found out of tolerance are running SLOWWWWWER; an advantage to the > consumer. But, the percentage of kWh meters found out of tolerance during > routine testing is very small (less than 1 percent). And that 'out of > tolerance' value typically is less than 2 percent. The electro-mechanical > kWh meter is truly a marvel. It is a highly accurate, long lived > instrument which operates in a relatively hostile environment for years > without requiring maintenance. > > Today's electronic kWh meters overcome the wear/dust problem as there are > no moving parts. However, change of component values over time may cause > similar problems; either under registering or over registering. So, > periodic testing of kWh meters is still mandatory. The main advantage of > electronic meters is the capability of including remote reading, load > monitoring, etc., which all contribute to a more efficient, accurate (no > manual meter reading person) and less costly operation. > > Mis dos centavos. > > de Milt, N5IA > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
