[Bmedfly]

When you make the Web-based app requirements, I would ensure they will work with Smart Home monitors like Sharptools and Actiontiles. It would be nice to have the energy monitoring as part of the larger Smart Home Eco System. The formats they require are pretty standard and you may already be compatible, but it would be good to check just incase.

https://sharptools.io/
https://www.actiontiles.com/app_about_www

[Bmedfly]

One thing I have learned over the years it was is simple to me can be hard for others to understand.  I have a EE degree so these multiplier calculations seem simple.  I also have many more things that are hard for me to understand than are simple.    I think a web calculator where the circuit voltage is entered and the multiplier is provided would be helpful.

 

Technology frightens me to death. It’s designed by engineers for other engineers. And they always come with instruction booklets that are written by engineers for other engineers – which is why almost no technology ever works.

– John Cleese

[Bmedfly]

I should have been a bit more open in my thinking. A transformer could be used to step down the voltage from the 220 mains (on the primary winding), and a precision resistor would be added to the secondary winding. A current clamp would be used to measure the secondary winding. Measuring the current through a known resistor value would give the voltage (V=I*R). Then multiply the measured current by the winding ratio of the transformer. This final product would be the voltage at the main circuit.

Obviously, this would require the above math to be put in the application. The transformer and resistor pack would need to be provided by emporia to keep everything aligned. It could also be used to automatically and dynamically set the circuit multiplier for the other clamps.

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