Here are a few pictures of my wall charger project. My main panel was full so I actually needed two sub panels. One over by my main panel, as well as one in the garage. Since I wanted to add other 240V circuits in addition to the wall charger in the garage I opted to put in a 125A sub panel in the garage vs just bringing a branch circuit over. Also, I wanted the ability to have a 100A breaker for wall charger as well as a distribution block so I could add additional Tesla wall chargers to the same circuit utilizing the networked master/slave configuration.
I ran 1awg, three conductor + 6 awg gnd metal clad cable from my main panel to the 125A main lug sub panel. I also used this same type of MC cable to feed the sub panel near my main panel. I added a surge protector on the sub panel as well as a voltage/current monitor that tracks kWh consumed by my charger circuit. I also added a 30A and 50A plug for future needs and a twist lock 30A for my 80 gallon compressor. I still have drywall to repair as well as running network cable and a feed for another charger in the future. I am up and running, able to charge at nearly 12kW now with minimal voltage drop. It sure beats 120V @ 12A.....
I ran 1awg, three conductor + 6 awg gnd metal clad cable from my main panel to the 125A main lug sub panel. I also used this same type of MC cable to feed the sub panel near my main panel. I added a surge protector on the sub panel as well as a voltage/current monitor that tracks kWh consumed by my charger circuit. I also added a 30A and 50A plug for future needs and a twist lock 30A for my 80 gallon compressor. I still have drywall to repair as well as running network cable and a feed for another charger in the future. I am up and running, able to charge at nearly 12kW now with minimal voltage drop. It sure beats 120V @ 12A.....