The Electrical Code

220.56 Kitchen Equipment – this one is easy. You need to take the largest two appliances and add them together. When adding them together you can not apply any feeders to this section of the dwelling with less. Usually you have 20 amp circuits even at 220 volts. So if you do it right there should be a circuit for the refrigerator, dishwasher, microwave, toaster oven, and the common appliances outlets with an outlet for the gas range out let for general use. This will prevent from nuisance tripping that happens when using multiple appliances at the same time. There are other circumstances that need to be evaluated before calculating feeders. But in kitchens of a normal sizes the feeders feeding the kitchen need to be given attentions so that the customer does not have a problem down the road.

“220.56 Kitchen Equipment — Other Than Dwelling Unit(s). It shall be permissible to calculate the load for commercial electric cooking equipment, dishwasher booster heaters, water heaters, and other kitchen equipment in accordance with Table 220.56. These demand factors shall be applied to all equipment that has either thermostatic control or intermittent use as kitchen equipment. These demand factors shall not apply to space-heating, ventilating, or air-conditioning equipment.

However, in no case shall the feeder or service calculated load be less than the sum of the largest two kitchen equipment loads.”