I have read a couple forums where owners have installed 100v up to 220v outlets for charging at up to 50A. I'm waiting for an end of the year delivery, so I am super new here. Tesla recommends 240v 40A outlet (NEMA 14-50) as I'm sure everyone knows. Is it because of cost that people install smaller current? Is there a tipping point where you have to upgrade all home electrical to get to 240v? My house has original wiring from late 70s. My circuit box is in a closet on the main floor and garage is below about 35ft away (house is on side of mountain so garage is technically 1st floor and part of house is over garage. Any advice, insight, recommendations are appreciated. Getting single charger as I live on an island about 40 miles wide.