I don't know with the Tesla, but my Ford gets a full charge on 110 in 6.5 hrs. 220 would do it in 2.5. installing the 220 would have run me 1500 at least for the wiring, since my basement is done and the walls would have to be opened
On a Fusion PHEV it makes no fiscal sense to be installing 220v service equipment nor even buying the 220v EVSE setup for that matter...even if the wiring or dryer receptacle was already present. The only time I charge my Fusion PHEV is when there is an empty electric vehicle charging station at the front of the parking lot. Sometimes I also plug it in at my business.
For a true BEV that someone is putting miles on, an at-home 220v EVSE setup seems necessary. A 110v/15 amp Level 1 EVSE is going to supply the vehicle charger with 1320w. A 220v/30 amp Level 2 EVSE that plugs into a dryer outlet in the garage is going to supply the vehicle charger with 5280w. A 220v/50 amp Level 2 EVSE that's hard wired is going to supply the vehicle charger with 8800w.
I'm contemplating manufacturing/distributing/retailing Level 2 EVSE products, so I'm trying to get an idea of what people are actually doing. EV sales are only going to grow, and I'm seeing lots of these BEV Fiats and Kia Souls etc with fairly anemic battery ranges. As HBS alluded to, a 110v Level 1 EVSE is only going to charge the battery at the equivalent of 3-4 miles/hr.