A regular plug. You just have to be careful and limit the charge power to what your power outlet and fuse will handle, so you do not have any fire accidents. For example most sockets are able to take 10 amperage loads without burning, and fuses are usually minimum that in Norway, many are 16 amperage. You must be sure not to overload your fuse so it goes, unless it is modern automatic fuse. Be safe and charge where nothing else is in use, like floor warmer which can take lots of power. Also if you use an extension cord from the socket to the car charging cable you must be sure it can handle the load too.

A general rule is that you are safe if you set the limit in the car to 8 amperage. In our case the fuse was 16 amperage, nothing else use the same course, the socket is pretty new so it should definitely be able to handle even more than 10 amp. However the extension cord was rated to max 10 amperage. You always have to find the weakest link. So I set 8 amperage. You can chose anything between 5 amperage and 13 amperage. Slower charge is better for the car battery too, Tesla super charge every day is more damaging than slow or medium charge speeds at home every day. Especially at higher battery percentage, if you charge all way up to 100%, it is recommended to charge to max 90% most of the time too. Because we was going on a long trip home, in the evening when I knew it would be near 100% when we leave even if i reduce it to 5 amperage, I did.

Open the picture in a new tab, or copy link to image and go to it. You can then zoom in and you can see the electrical cable coming from the cable socket on the house, which ends up in the car after that long extension cable. I could have put the car closer and not used the extension cable. But I wanted to have the car in the shadow most of the day so it does not get very overheated and sun inside.