Most rooms have one or two 15-amp or 20-amp circuits though some older ones may be only 10-amp. One 15-amp circuit can handle about 1800w. If you have access to your circuit breaker, it should be listed there.
Not really true, it completely depends on how the electrician wired your house. THe electrician in my house obviously hated me, as literally every room in the house is split across two 15A circuits (the same 2), except the kitchen which has like 100Amps. And there's a 20A breaker that's connected to nothing.
THanks buddy

I was only speaking for the places where I've looked at the circuit breaker. I didn't mean to overgeneralize, and I wasn't accounting for bad electricians. My recommendation, before plugging in 10+ amps, you should check your circuits breakers. I've had no problem with 2400w on a single 20-amp circuit. YMMV.
One bad wiring job I've seen was an apartment I lived in several years ago in Allston, MA. The whole 5 bedroom apartment had two 15-amp circuits. If we used the AC and microwave at the same time, it would trip the breaker. Even worse, both 15-amp circuits were connected to a old 20-amp fuse in the inaccessible basement. So if we spread the evenly over the two 15-amp circuits, we blew the 20-amp fuse and had to wait til the next day to get it fixed. Only made that mistake once. Thankfully I didn't try bitcoin mining in that place.