I have a 3-phase installation for my house as it is using a Heat Pump.
I am struggling to find a fully integrated monitoring system.
I know I could use 3 PZEM-004, one for each phase but they would need to be powered from the 3 different phases. That makes a lot of wires.
I was thinking of some firmware change like what OpenMonitor is doing with 3-phases: they approximate the phase delay by sampling delayed values and providing a good estimate of the overall 3-phases consumption based only on one voltage.
Would it be possible with ESPproMon?