Come on, I just want to have a good night sleep xd. I hope I dont burn my parent house down. They gonna kill me zzz
Well
15 amps 120 volts no good.
20 amps 120 volts should work maybe kind of.
20 amps 240 volts no worries
30 amps 240volts no worries.
So what did you hook up to?
Obviously if it is working currently (for him to ask if its safe) he must be on a 20 amp. If it is running, generally I'd say its pretty safe if you have modern up to code wiring. If you pull too many watts you are simply going to trip the breaker. It is designed this way so you don't set your house on fire.