Do both!
I bought a Mobile Connector and installed a NEMA 14-50 receptacle not long after I ordered my Model Y. It just hung there on the wall teasing me with the TESLA logo illuminated unnecessarily for three months. I glared at it at least twice each day with impatience while getting into my gasoline-powered vehicle. I was giddy when I actually get to use it for the first time on the day I took delivery!
I normally drive less than 40 miles per day and it takes about 1.5 hours to recharge each evening with the Mobile Connector, which is more than adequate for my needs. A full charge from 0-100% would take about 12 hours. A Wall Connector reduces these times to 1 hour and 8 hours, respectively, because it allows 50% faster charging.
A couple of weeks ago, I installed a Wall Connector for my brother-in-law. I went ahead and ordered and installed one for myself even though I didn't need it for two reasons:
- I like the capability to charge at home as quickly as possible in case the need ever arises.
- I like having a second charging solution in case one fails (there are no L2 or L3 chargers near me, so I rely on home charging).
If I had to choose either a Mobile Connector or a Wall Connector, I would choose the Mobile Connector because it is portable - a Wall Connector isn't.
If I had to buy one before the other, I would again choose the Mobile Connector.
Ultimately, I would recommend both so that you could charge at home as fast as possible, have a backup charging method, and the ability to keep the Mobile Connector in the car in case you need to charge away from home.
Even though I'm charging using the Wall Connector now, I left the NEMA 14-50 receptacle in case I need to use the Mobile Connector as a backup or maybe another Tesla or EV owner needs to charge at my house. Or, maybe I'll decide to buy a second clothes dryer or range or take up welding as a hobby and will already have a place to plug something else in.
In the interest of transparency, it cost me less than $150 in materials (breakers, receptacle, wire, conduit, fittings, etc.) and a few hours of my time to install both a NEMA 14-50 receptacle and a Wall Connector because I have the ability to do my own electrical work and my circuit breaker panel is in my garage. If I had to pay someone hundreds or thousands of dollars for this work, my recommendation might be different.
