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Re: [datacenter] Pollable Watt-hour meter



On Mon, Nov 06, 2006 at 04:26:57PM +0000, Ronan Mullally wrote:
> I think I remember reading about devices like this on the datacenter list
> a year or so ago.  IIRC devices like the 'Kill-a-watt' were mentioned.
> 
> I'm looking for a device that will allow me to measure total electricity
> usage in a domestic environement.  I'm ideally looking for something that
> uses a passive connection (an induction coil if I've got my terminology
> correct) at the utility hand-off rather than something that needs to be
> wired into the mains.

There's plenty of full-blown solutions by the people building power
distribution for data centers (ie. APC), but it sounds like you'd be
more interested in something like

http://www.weatherduck.us/
or 
http://www.itwatchdogs.com/

Who both have inductive current measurement devices over a 1-wire
serial bus. Although the current module is going to be 20A max, which
means you'd measure each leg coming off your panel, rather than the
whole panel in your house. 





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