Solar Guerilla danger? [RE-wrenches]

[Todd Cory, Bald Mtn. Solar]

Hi Kurt,

All 120 volt loads in homes with 240, 3 wire service are read accurately. These
homes have meters (like the one you have) that accurately read 240 (hot to hot)
and 120 (hot to neutral) volt loads, and generally *both* ways.

It is curious to me that you could not get that meter to work with your
measurement of energy consumption of a 120 vac appliance. Were you feeding it
with 240 and pulling the load off the neutral and one hot? I believe they will
not read accurately if fed with 120 only.

Todd



sunwise at cheqnet.net wrote:

> Hi Bill,
>
> Question: I tried utilizing a standard three wire 240vac kilowatt hour
> meter to measure energy consumption on a 120vac appliance.  Numbers were
> way off (low) and I was told that you had to have a two wire (three
> connections) meter that was designed for 120vac only.  I bought such a
> meter and it worked fine.  Here is the question... could there be a
> whole bunch of grid-tie systems out there that aren't getting credited
> with the true ammount of KWH's produced because they are feeding 120vac
> only through one leg of 240 volt meter?  Kurt Nelson

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