For a standard 60-amp circuit, you need 6 AWG copper wire paired with a 60-amp breaker. If you are using aluminum wire, you must step up to 4 AWG. This baseline assumes modern 75°C rated terminals, a 30°C ambient temperature, and a run under 100 feet.



⚠️ Mains Safety Warning: Working inside an electrical panel exposes you to lethal voltage. Always de-energize the main breaker, verify the bus bars are dead with a tested non-contact voltage meter and a multimeter, and wear arc-flash rated PPE. Local codes may require a licensed electrician for panel work.