modest crown
I'm trying to setup a 30A/1V CT sensor with ESPHome to monitor the total power consumption and vary the PV export based on the current feed-in rate. e.g. "If feed-in <$0.00/kWh and house usage is currently 600W, set PV limit to 600W".
I connected the CT sensor to an ESP32 with ESPHome installed, and attached the CT to the PV wire in the fuse panel. Then I manually configured the PV export with values from 0-5kW and noted the amps reported by the sensor at each value for calibration. This part works great, the watts reported from the CT and from the PV integration are the same, +/- ~150W: https://imgur.com/wRO9jjd (Blue=PV, Purple=CT)
Then I moved the CT sensor from the PV wire to the mains cable that runs through the electricity company's meter. From my understanding this CT should now be sensing both import & export combined, e.g. "House using 600W, PV producing 3000W = CT reads 3600W". Although that appears to be incorrect: https://imgur.com/Z6v5W1e (PV limit set to 1kW, spikes are HVAC)
