I have an emonTx monitoring the in-coming 3 phase supply at one of the premises I use and am a little puzzled by the readings on one of the 3 phases (L1 Red) which presently has very little load. The supply to the voltage reference is on the incoming L3 (Blue) phase (because that is what happens to…

Did you go through the full calibration procedure in the documentation for the sketch - because it sounds to me like a phase error in that c.t. It starts on page 6. Over the years, the phase error of those c.t’s has changed as the manufacturing has changed - and I don’t have access to all those arr…

Puzzled by 3 phase readings

Hardware emonTx

borpin (Brian Orpin) 3 March 2021 16:30 2

One for @Robert.Wall I suspect but firstly, you do have the 3 Phase Sketch installed?

[edit]
Yes I see you do.