I would like to setup a shelly plug with a heater … maybe in summer a small air condition if I export more than 300w to the grid. I dont get money for export and it make sense to use the energy for heating or cooling.
I get from the tasmota the Power of each phase. My Plant fires to one Phase. The messured power which I have to pay is the sum of all 3 phases. The produced Power is measured as neg. Value.
So if the Sum of L1/l2/L3 is negative, I have the value which is interesting for me. If that neg. Sum is greater than 300W the Plug should be powered on if it goes less then 10W it shoud go down.
in theory a easy job for Home assistent. But for me to big. Hope somebody here could help me out.