The number of watts in a set of Christmas lights can vary depending on the type of lights, the number of bulbs, and the length of the string. Generally, a set of Christmas lights will have a wattage rating between 100 and 1000 watts. For example, a set of 100 light bulbs may have a wattage rating of 100 watts, while a set of 500 light bulbs may have a wattage rating of 500 watts. The wattage rating is important to consider when selecting Christmas lights, as it affects the amount of electricity that will be