The video (not mine!) explains the settings of a similar system I am using. For more info, go to http://openenergymonitor.org/emon/
Other sites where I publish live data: http://daturach.github.io/
Prototype energy meter (10 bit A/D) containing a PIC micro + WiFi sending the following params.
Irms, Vrms, Power, Total Kw/h, Frequency, Temperature, Humidity.
Coming soon. Power factor, 3 channel Irms, 12 bit A/D. Accuracy +/- 2%
Using an ESP8266 ESP-01 module and an Arduino Pro Mini 3.3V I wirelessly update all outputs from my thermostat to here for data analysis and because it's cool.
This requires a voltage divided rectifier since thermostats run at least 24 VAC RMS.