I was talking with an electrician doing some basic wiring at my house and mentioned that I'm getting an EV. He told that his relatives came to visit and wanted to charge an EV at his house. He had dual 230 V sockets that were otherwise identical but one was more worn than the other. The EV charged extremely slowly from this one socket, but once they switched to the other one, then it started charging normally (I assume at ca 2 kW).
Now I've got an EV myself. I first plugged it into a socket which had a 2-way socket multiplier and the car said it will take more than 24 h to fully charge from ca. 20% SoC (39 kWh Nissan Leaf.) Then I removed the socket multiplier/adapter and it started charging at the expected rate (ca. 2 kW).
This has me wondering: How does an EV regulate how much current can it pull?
Does it measure resistance in the circuit before starting to charge and determine the maximum current it can draw, or is there another way to intelligently not trip the fuse or set the socket/wires on fire?