My goal is to have a graph of whole house kW.
I gather the description of the inputs from here but that leaves out Vn, F (which are obvious) and, “1”, which is not intuitive. (breaking out in song … is the loneliest number …)
I’m not understanding Pn (where n is 1-12). P = V * I * φ. I is the current going through the CT, φ, the phase angle between V and I, but what is the source of V? I have V1, V2 and V1+V2. I have 120V circuits, which could be sourced from either leg, and 240V circuits.
P1 and P2 are on the main feed cables, and seem to be associated with V1 and V2 respectively (because the powers are positive and almost the same). Seven other circuits are 240V; on six of these the CTs are on the V1 feed, the other on the V2 feed. Theses need to use V1+V2. The remaining are on 120V circuits, two on V1 and one V2. This latter P is negative.
Is this how it’s done?
**
How do I specify with which V to associate the P?**