Electrical appliances all have a wattage rating. This is something that most people know since the rating is usually displayed prominently on an item’s packaging, as well as on the item in many cases. Lamps are no different, and the wattage is going to tell you exactly how much energy the lamp is going to draw. This means that you will want to choose a bulb that is going to be within the lamp’s range. The wattage number is also going to give you an indication of how much light the lamp’s bulb is going to be able to produce.