I'm curious, how do you use e.g. a washing machine or an electric kettle, if 2kW is enough to flip your breaker? You should simply know your wiring limits. Breaker/wiring at my home won't even notice this.
Boiling 1 liter takes like 2 mins. Most Americans don’t have kettles because they don’t drink tea.
You're correct that the dryer is on a larger circuit, though.
You think that this is "just fine" because you've never experienced the glory that is a 3kW kettle!
1.5kW must be absolute agony
I've never seen a dedicated circuit for dryers in Australia, and I've lived in probably a dozen different properties. Ovens, aircon, hot water, bathroom heat lamps often have dedicated circuits, though.
If that wasn’t the limit though, the fact that the machine is currently a space heater at 2 liquid cooled 4090’s would be.