I’ve had my IotaWatt running for all of three days now and am very happy with the device.
There is one area where I’m wondering what I might be able to do about and that is the precision.
Now, I only have a single days worth of data to base this on, but it looks like results on at least one of the sensors is almost 3% off. I get the impression that others who have measured see better results than that?
So this is what I’ve got:
VT: Ideal 77DB-06-09(UK)
CTs: 2 x SCT013-000, one on the use side of a Henley block, the other on the cable coming from a solar PV inverter.
I read the generation meter of the solar PV installation yesterday and today. The readings show a production today of 7.4 kWh. According to the IotaWatt, production was 7.2 kWh. The difference is less than 3%, so probably within what I can expect, but based on what others have seen I guess I was expecting the precision to be a little better?