If you want the whole house, you’ll need to crack the box to get at the phase split as it comes in.
If you want to track individual circuits, you should be able to do it outside the box. It will work with single phase at least,but not sure about dual-phase; but those are usually reserved for heavy appliances like stoves and dryers.
When I lived in Montréal, I found the social services were very strong in my neighborhood (medical, libraries, transit, daycare, schools, parks, etc).
I attribute this to all stratas of income using the same services. My comparison of Ontario had different income levels using different services, which led to quality differences between those services.