Your right, I misspoke

My point was that you should try to maximize your level 2 charger as much as possible. Charging a model y from like 20 to 90% shouldn't take more than 12hrs... And 8 hrs would be better. 30a at 240v will do that.

It depends, my gen3 Tesla charger requires a 60a 2p breaker and pulls 48a Max at 240v. You can set it lower... Either on the charger or the car. But there is still a big difference in charging times from 11kw to 5-6kw.

It's nice to have the flexibility to charge a little faster.

The plug from the charger is a means of disconnect.

Forget a jb if you don't need it, using a larger size wire isn't a problem as long as it fits the lugs.