Hi.
I have a similar question. I live in Holland, Europe. We have a 3 phase system here. Between 2 phases the voltage is ca. 400V.
So voltage between phase and null is ca. 240V. In the (dutch) manual, the instruction told me to set the multiplier to 0.25.
Unfortunately my simple meter won’t go higher as 250V, so I can’t measure the exact voltage between phases right now.
But reading the above, I think multiplier would be 120/400 = 0.3. But at the moment, I see difference in measurements between Emporia and the Smart Meter itself. The Smart meter cycles throught it’s values, and the 4th is the current live value. For example, the smart meter shows I’m using 2250 Watts, and Emporia shows 1750 Watts.
My whole point was to measure if the smart meter is correct, because I suspect it’s not, it’s 25% too high. But if the multiplier isn’t stable, I can’t tell for sure now. Maybe someone can help determing the correct multiplier factor.
If it’s true that the smart meter isn’t correct, it would cost 542 euro’s to have it tested, and after that maybe claim back to the provider.
Greetings.
