I have a range fed by 6/2 al wire on a 50 amp breaker. I want to replace the range with a cooktop plus wall oven. They are rated at 5.8 and 7.2 kW.
If I add up and apply the demand factor I get 35amps.
Can I replace the wire with 8/3 copper and put it on a 40 amp breaker? The run is 50 feet.