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How does an electric meter work?

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How does an electric meter work? RayV 04-24-2006
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Posted by RayV on April 24, 2006, 9:59 am
I did not check this out on snopes but have heard that the eletric
meters on our houses always read the higher of the two lines coming in
to determine the amount of juice used. The rumor goes on that you
should *balance* your panel so that the same number of constant users
are on either side of your panel. An example might be that your fridge
should be on one side and your furnace on the other, or electric range
on one side and electric dryer on the other.

Is there any truth to this or is it one of those tall tales based on
some obscure Tesla theory?

Would this gadget really save me money on my electric bill?

http://www.renaissance-pacific.net/ElektraBand_Product_Info.pdf


Posted by hallerb@aol.com on April 24, 2006, 10:14 am
the only thing this does is bring more money to the merchant.

Yes both sides of the power line should be balanced, but BOTH items
must be on at the same time. So the neutral doesnt carry current.

SAVE YOUR MONEY!


Posted by kevin on April 24, 2006, 11:03 am
Wow.

I actually read that whole PDF just now. It's kind of interesting.
Other than not explaining in technical terms, looking silly, and having
a lame brochure, it actually doesn't make any wild claims like I would
have expected.

It makes a claim of 3-5% reduction. It specifically says it doesn't
work for digital meters, and it is not a magnet, and it won't cause
inductive heating problems. It mentions a handfull of other caveats too
even. Since when does a scam make such modest claims and have so many
caveats? What is the world coming to? Will I start getting "Enlarge
your ***** by 3%!", or "Lose 1 to 3 lbs and keep it off as long as you
keep exercising and maintaining a healthy diet!" emails?

So can anyone answer the op's original question? Does a mechanical
meter overestimate when the load is imbalanced? And if so, can anyone
think of a plausible scenario, in any possible situation, real or
imaginary, that would let the device in the PDF picture (I can't tell
what it is -- just some kind of metal C-shaped thing I guess) do
anything that could even have a remotely possible chance of having even
a miniscule, undetectable, insignificant but still non-zero effect on
the meter? I.e., is this just a not-very-useful and very poorly
marketed invention, or a not very useful and poorly hyped scam?

-Kevin


Posted by on April 24, 2006, 11:14 am

>I did not check this out on snopes but have heard that the eletric
>meters on our houses always read the higher of the two lines coming in
>to determine the amount of juice used. The rumor goes on that you
>should *balance* your panel so that the same number of constant users
>are on either side of your panel. An example might be that your fridge
>should be on one side and your furnace on the other, or electric range
>on one side and electric dryer on the other.
>
>Is there any truth to this or is it one of those tall tales based on
>some obscure Tesla theory?
>
>Would this gadget really save me money on my electric bill?
>
>http://www.renaissance-pacific.net/ElektraBand_Product_Info.pdf


Urban legend.
To start with the stove and dryer heating elements are on both sides
of the line anyway as is anything that is 240v. The meters do a pretty
good job of accurately measuring the power used but there is some
saving to be had by balancing your panel because the voltage loss
(heat) in the neutral wire is eliminated.
It will not be a big number tho.

Posted by on April 24, 2006, 12:58 pm
I would look into power factor correction first.


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