Kelvin decided that we should use a scale based on what atoms feel like is the the full range of sensible temperatures, with that range set to 0 through NaN (exception thrown).
There's actually a theoretical maximum temperature.
The mathematically perfect scale goes from zero to one T~P~.
A recent Technology Connections video mentioned people are configuring chargers to 48 A when they're using 14-50 "50 A" sockets that are really designed for 40 A continuous current. Or they're using aluminum wiring without corrosion protection, or not abrading the oxide layer.