Question: what is the difference between a 20 amp and 30 amp breaker?
Answer: So a 20 amp breaker usually has 12 gauge wire attached to it. If you replace it with a 30 amp breaker (which usually has thicker 10 gauge wire attached to it) then that could become very dangerous, if too much amperage flows through the wires, the wires could majorly overheat and cause a fire.