Can a dishwasher and disposer be on the same 20 ampere circuit?
In a kitchen there are a minimum of 2 20 amp circuits required. Where I live a dedicated circuit is required for dishwashers, Most of the houses I have wired have 4 branch circuits or 5. I usually put the fridge on its own circuit, a microwave and the disposal on Thier own circuit, if there is a trash compactor the disposal and compactor. In some cases where a 120 outlet is needed for a gas stove or cooktop I will put that on the same as the microwave. There is not a code requirement for this many circuit but the permits only cost a couple dollars per breaker and a few extra feet of wire. I have had to upgrade quite a few kitchens over the years and only one I installed as the owner was pinching pennies and it cost him almost 3k to do what my proposal was at a 400$ savings up front.