Hi again. I installed my new IoTaWatt last night and have a data visualization question. I’ve got a pair of 200A CTs around my garage subpanel mains and I’m interested in seeing graphically how much kWH I’ve consumed over time for that day (i.e. resetting back to zero each day).
I’ve set up a panel in Grafana that shows what kind of shape the graph might look like (i achieved this by using a cumulative sum of energy formula), but the values are off.
My power (watts) measurements seems to be on point, and my single-state kWh calculation seems to be accurate (matches Iotawatt delta calculations), but I can’t figure out the best way to show the graph on the lower left side that represents energy accumulation over time.
In the image below, I’ve isolated the power readings for a pair of clamps i have around the water heater circuit, for clarity. We can clearly see that the cumulative sum reports just above 3 kWh, but the actual sum is > 4 kWh.
Thanks in advance for any help!