We have a house with the somewhat ancient three phase (120V each) three wire (no neutral) system. We would like to measure the total power consumption for the house and integrate it into Home Assistant. Are there any solutions that work off the shelf for this “old” system or do we need to invent something new?
Our solar panel company says that it is possible to use clamps to measure current, but that it won’t yield reliable results for these older systems.
Surely, there must be a way, or?