It looks as if you are new at this so I’ll tell you what I know. I invite anyone else to jump in. I am not an electrician.
The car can charge from a 120V outlet. I get 3-4 miles per hour with my S charging this way. You cannot charge at the same amperage as the breaker. You can for a short while then the breaker will probably trip. A breaker has one function, that is to protect the wiring in the house. Modern breakers often trip slowly, they’ll often deal with a larger amperage but not for very long. Just because a breaker doesn’t immediately trip doesn’t mean it won’t trip later. If your breaker trips, you can set the car for a lower maximum charge rate.
The car will have a certain amount of “overhead” when charging so it is more efficient to charge at a higher amperage. I think of that overhead as fixed but that might not be right. In any case the increase in amperage will result in more miles of charge than one might think by simply doubling the 120V charge rate.
You can use various adapters and you can get a 50A extension cord. The cord is very heavy, it’s similar to a garden hose in diameter. Mine I think is 30 feet. Then one can add various adapters to the end. I have an adapter that goes to a modern clothes dryer outlet. With the extension and the adapter I can charge from a 240V household dryer outlet. I believe I get 15 or so miles of charge per hour that way, but it’s been a while.
If the time you anticipate spending in the current rental is limited, I’d look into using the available electrical supply/outlets. If there’s a clothes dryer that’s an option. An extension cord/adapter system will travel with you. We’re talking fat 50A extension cords, not the 120V cords you find at local retailers. Those mass market cords may provide a solution as well but you must pay attention to the ratings, the quality, the size of the wire and length of the cord. If any cord ever gets warm, that’s a serious warning. I have a small welder, 15A of current is sufficient to weld steel. Not as it comes from the wall but the point is that 15A is quite a bit of power. There’s another consideration, most things plugged into a 120V outlet sip power and don’t draw anything like the amount your car will. The car is a sustained high draw device.
There are a large number of outlet configurations in 120V and 240V, especially in older buildings. You can find about any adapter you need. The car is very good about using whatever you supply it. It’s good at limiting the amperage though a setting on the screen but that setting can change after a software update so always check. If you trip a breaker after a software update, that’s something to check.
On a positive note, it’s better for the battery to charge relatively slowly. The superchargers charge quickly but that’s harder on the battery than a slow trickle. You can find charts of various adapters on line. That chart will supply you with the information you’ll need if you go the adapter/extension cord route. I can charge about anywhere, from a 120V15A outlet up to 240V50A.
If using a nondedicated circuit, you want to be aware of other things on the circuit. A compressor motor in a refrigerator or freezer can draw a lot of current as it starts, much more than when simply running.
I can’t think of anything else to tell you right now, but this is far from exhaustive. It should get you started, though. You have a lot of options but you must read and know exactly what you are doing.
There are some tiresome people that go through blindly disagreeing with posts for no apparent reason. If anyone disagrees with something I‘ve posted here, please post exactly what it is that causes you to object, and why.
