And thus the breaker would trip. What's to stop someone from using 2 1800watt hair dryers in a bathroom. Is there anything illegal about it ? My experience with these imported machines, is the name plates are way over rated. The motors have a fancy VFD control panel, with a PLC, and they never run at full speed. The current draw is about 1/2 of name plate, with a few spikes here and there. Another example of my thinking: If you add up all the breakers in any panel, you are certainly going over the main breaker size. My house for example has 42 breakers in 1 panel. another 12 in a sub panel. If you add up all the breakers, it's 900+ amps running off a 200 amp service. And I know I never drew more than 100 amps at any given time.