Two main factors determine the wattage requirement: blade size and type of food being chopped. Most slicers come with either a 120-200 watt motor or standard 7-inch or 8-inch blades. Users will be able to cut basic vegetables and deli meats with no difficulty. A 320-420 watt motor is required for a blade measuring nine- to twelve inches in length. This will allow users to easily cut large slabs of meat.