Re: Looking for power metering equipment...

[David Lesher <wb8foz () nrk com>]

Speaking on Deep Background, the Press Secretary whispered:
> Concur with you need wattage not amperage.  There is a 'relatively' cheap 
> method of doing this however local electrical codes may put a damper on 
> this type of project.
>
> You put a current transformer on each branch circuit.  A 'typical' current 
> transformer will generate 1Millivolt per Milliampere.  You then install a 
> A/D board in a PC and write a simple application to query each channel of 
> the A/D.  or purchase a commercially available SMNP datalogger.

I assume Alex is looking for a boxed solution. If not concur
it's Not Rocket Science [TM-Click&Clack] to build a system. You
can do the voltage sensing safely. {My too-early AM thinking is
that there will be too little phase shift in an unloaded Voltage
Transformer to worry about.}

You'd need a VT per panel leg, but a CT per branch circuit.




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