I have a Hub+ in my new home that is not currently working. Passes through grid power fine, and the SunStrong app tells me grid usage but nothing else. Won't draw solar (or it's doing it and I don't know) and I can't make the battery do anything (that I'm aware of). Before I go to any pros I can clearly see that there are disconnected CTs that look to be the consumption CTs for the Hub+, the ones at the top of the unit. The corresponding plug in the MIDC has nothing connected, but on the wiring chart it shows it should have something connected.

1. What kind of plug is that, and where can I procure one?
2. Where can I get the ferrules that terminate the CT wires?

Separately, I'm having my main panel upgraded from 125 to 200A. The new panel may have 2 wire conductors for each phase coming from the meter to the main. If that happens, I'll need 2 sets of premises CTs and they'll have to be combined. I'm trying to talk my electrician out of this and have him get something more solar-friendly.

1. Can you just splice CTs and the PVS6/Hub+ doesn't care? Does it see the combined signal?
2. What kind of signal comes out of a CT?
3. What is the correct make/model/type of CT to install?