I have 2 separate Sense CT pairs on the SAME panel feeds.
Sense1 has been running for more than a year and seems to correlate, month-to-month, quite well with my provider metering.
Sense2 I just installed to “test” and I see a significant difference (so far) in the daily metered usage (of Sense1).
Drilling down to each monitor’s Voltage/Wattage I can see that relative to the “actual” voltages (using a Fluke 117) I have, approx:
SENSE1: X + 0.4V
SENSE2: X - 0.4V
Meanwhile these are the last 4 days usage: