If you’re still around, I have a question for you. I’m not an electrician, but I do understand things a bit. My problem seems similar to yours. Here’s my set up (installed by previous owner):
I didn’t quite realize that the sub panels are running in parallel and I had an electrician install the Sense in the big panel that you see. The other sub-panels are elsewhere in the house with the shutoffs next to the large panel. Because I have that run under the large panel and the subpanel shut offs, can I move the clamps down there around the main before the split and then keep the Sense powered from within that larger panel? I’d get an electrician to come back to do that if it would work. My only worry is if there is some reason that running the Sense off of only one panel will affect whether it can detect devices that are connected to the other sub panels. Would love any help!