My son bought a 2019 Salem 32RLDS a few weeks ago. He is using it as a primary residence so he has his home computer, electronics etc...in the trailer. He is utilizing the washer and dryer circuits for some of his larger amperage items such as a space heater and his computer (he does not have a washer or dryer). My question is what gauge wire is this trailer wired with (lights and outlets)? He has been told that he can replace the 15 amp breaker with a 20 amp but I have advised him against it unless the electrical wiring will support the breaker change.