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How to monitor power usage from home power meter.

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Posted by Karl Easterly on December 20, 2003, 3:23 am
I am interested in a device, like a coil, which I can wrap around the
electric main coming into the meter on my home, where I can then
capture power usage data via an embedded board with ethernet and an A
to D input and thus make available this reading for collection by an
application on my PC such that I may monitor the instantianous and
total power usage in my home.

Any ideas would be helpful.


Posted by jack morgan on December 20, 2003, 7:45 am
collatz@bigtexansoftware.com (Karl Easterly) wrote in message

heres an idea, there are meters in existance today that are capable of
such data collection, i have 4 and i am trying to get them working.
mine are made by MUnet meter. theat fit into the socket of a regular
electric meter box. they have a built in ethernet card for output of
data for stats. you are supposed to be able to log in to the meters,
but i have only got to the login screen of one, MUnet gave me some
passwords but they have not worked. these are real cool digital
meters. they work like a regular digital meter out of the box. look up
my posts you will see some information about the meters i have.

Posted by Matt on December 26, 2003, 3:50 pm
 Whoa! This is cool!

How expensive are these, Jack? Which one gives you the data output for household

Imagine the possibilities if one could manage their electrical network from
their home PC! Its nice to have controllers
that do this all for us but having performance data and being able to alter how
a hybrid system supplies/stores/gathers
energy could be VERY useful.

Say more Jack! I know a few software developers off-grid that would be
interested in testing this gear.

MattB in Wisconsin
mberigan at berigan dot com

jack morgan wrote:

Posted by Arnold Walker on January 5, 2004, 11:06 am
 Some of your software bundled with the 505 generator/power ,management
controls is already written for that.
Except that it  is from the utility end of the picture.elimenates
meterreaders since you can call up the meter,instead.

household usage?

from their home PC! Its nice to have controllers

alter how a hybrid system supplies/stores/gathers

interested in testing this gear.

Posted by William P.N. Smith on December 20, 2003, 2:57 pm
 collatz@bigtexansoftware.com (Karl Easterly) wrote:

Look for a current transformer, and make sure you keep the output
wires shorted (or shunted) at all times, as otherwise you can get
large voltages...

William Smith
ComputerSmiths Consulting, Inc.    www.compusmiths.com

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