Can you run microwave and freezer on same outlet?

It is not recommended to do this. The reason being is that if both appliances are on at the same time, there is a chance that the breaker will trip. If the breaker is not reset right away it will leave the refrigerator with no power. A fridge with no power will start to defrost if it has a freezer compartment. When new homes are being built electricians wire each individual appliance outlet as a dedicated circuit, meaning that only one appliance outlet is assigned to that circuit and nothing else.