Customer wants to get in touch with the people that built garage in the backyard to figure out why a 30 amp breaker is controlling a 20 amp circuit in the garage. Explain to customer that it should have been permitted but all I know is that it’s oversized and dangerous to leave as is. Explain to customer I will not be allowed to replace the GFCI unless we replace the breaker For it too. Explained that the wires could potentially melt and cause serious issues down the road if it stays like that.