Christmas light and Safety Instruction

The majority of christmas light today use a parallel wiring system. Parallel wiring provides more than one path of electricitl for each light bulb to follow. After the current leaves the light bulb it follows two or more path before returning to the electrical source. The parallel lights have two wires and each light bulb has its own positive wire connection so if one light bulb burns out the rest lights remain lighted. To reduce the risk of overheating the lights, you should replace any burned out light bulbs promptly. Use the same wattage replacement bulbs as the original strand of lights. The voltage of the light does not change when another set of lights are added, what does change when adding additional sets of lights is the number of watts. This increase in wattage increases the amount of current that passes through the light bulbs.