Not sure what you are trying to do. Are you trying to get this with Graph+, query or something else?
In general, a script that adds together L1 and L2 with units = Watts will give you the total generator output. (You don’t need to measure the N). At issue is whether your VT is connected to the generator output so that you get a voltage reference. If your VT is on a circuit not fed by the generator, you cannot measure anything from the generator accurately unless you:
- Add the VT circuit to the generator output.
- Move the VT to a circuit on the generator output.
- Add a second VT on the generator output (input 13 or 14) and specify that as the reference for the generator L1 and L2 CTs.
If you have a situation where some of the house is on the grid and some is on the generator, then option 3 is your only choice.