Haha wow id like to know what kind of printer that is you have that is pulling 2kw? It it a commercial printer? A strat or 3ds?

Average printer you have a 40w heater for the hotend + a heated bed which is the biggest draw and average one of those is around 180w. Some larger beds with a high power heater can get up into the 300w neighborhood. The power draw for the electronics and steppers is peanuts so average printer say 220w-350w. There are exceptions of course.