I have a 3 phase supply at home, and a 10kW Sunsynk inverter. This is a recent installation, but the installers have gone to ground and won't provide any assistance. I also have an Emporia Energy Monitor, which has proved considerably less useful since the solar went in. There seems to be significant diparity between the Emporia CT monitoring and the Sunsynk data. I would appreciate some assistance in understanding what is reliable and what is not. Then I can get to work on improving the overall electrical performance.

The inverter is >40m from the consumer unit, and I understand this may cause poor quality data from the Sunsynk CT clamps (although cables are twisted pairs). The Emporia CTs are very close to that device, so they should be fine. Can someone please help me with what the consequences of that are. How does the Sunsynk use the CT data?

At present, the Sunsynk shows a far bigger power use by the house than the Emporia does. There is also often a signifcant discrepency in the Sunsynk numbers. So eg below there is c400w disappearing somewhere.

But the position gets worse when I look at the Emporia numbers. At the same time as the above reading, they show power coming from the inverter into the house as below:

That's way lower than the Sunsynk figure. At the same time, the Emporia figures indicate the house is using less then 400w.

None of these measurements really correlate well at all, and I'm trying to figure out which data has integrity, and what the consequences are for the operation of the Sunsynk. I would expect the solar PV watts and the battery watts are reliable. What about the domestic use figure? If that's right, then am I just sending lots of energy to the grid without knowing it? Any help gratefully received.