I am putting in two IotaWatt’s, on opposite sides of my US Split phase 200A/240V panel.
Because it is easy, I think I will run two VT’s one on each leg, split both, and feed both to both IotaWatt’s. At worst I’ll see nicely balanced voltage all the time; at best I might see something interesting.
Let’s call the VT’s L1 and L2 for each leg, and the IotaWatt’s Left and Right.
Left and Right’s USB power adapter will be plugged into different legs for each Iotawatt, but I assume that does not matter (it’s all DC, right?).
One VT will go on the 9V Ref input, the other on a CT input on each IotaWatt. Should I use L1 on both left and right IotaWatt’s Ref input (with L2 on another input).
Or should L1 go on the Left and L2 on the Right (and thuse L2 and L1 on the Ct input on each)?
Or does it matter?
Is there guidance somewhere how to make use of it now that I have a VT for each leg? In browsing the input definitions I do not see a place to select the reference source.
Yes, this is unlikely to yield anything terribly worthwhile, but gaining some education is always interesting, and it can be another data point when someone asks “is it worth it”.