I'm awaiting my Model 3, and thought my charging situation was all set. (townhouse, 1 car garage, 200A service...I was just going to put in a 50A breaker to charge my Model 3 at 40A load....) But now the wife wants to move to a house with a yard. We've picked the house, which was built in 1900, but is almost done being completely renovated. So now my charging situation will be: house with 100A service, no garage, gas appliances (which will reduce the load on the 100A box....) I'm leaning towards the HPWC, since it will only be "live" once it's in the car and at it's set time....best to not have a live wire hanging off the side of the house.....but can I get away with a 50A breaker, and charge at 40A overnight when load is lowest? Or should I spring for 200A upgrade and put in an 80A breaker for the HPWC? The wiring to the outlets around the house should not require any upgrades, as the entire house except foundation and studs is brand new....I'd have to obviously pay for a 200A box, and about a 15 ft run to the outside wall. Fun twist: the home was converted from oil heat to natural gas during the renovation. Instead of cutting another hole in the wall, I am going to ask the electrician to run my HPWC cable through the capped-off oil fill tube still sticking out of the side of the house. Clearly I have until at least this fall to even get mildly worried about this....but having an idea of what I want to do ahead of time wouldn't hurt.