Where there is a break in the circuit coming from just one light bulb, all the bulbs go off.Īdditionally, the Christmas light jack typically comes with a couple of fuses located at the male jack end. Christmas lights in series Christmas lights in parallelĮither way, on the hot leg that goes through the bulbs, one bulb passes electricity to another on the same string and this must continue for all the bulbs to light up. Our major problem in this post generally relates to old-style Christmas lights.Ĭhristmas lights either entirely exist as a “series” of lights on a single wire string or a parallel group of lights connected in “series” to one plug. To know where your Christmas lights could be having problems, it is important to know how they work. How To Test Christmas Lights With A Voltage Tester.How To Test Christmas Lights With Multimeter.Required Tools To Test Christmas Lights.The latter, on the other hand, is more complicated as removing only a couple bulbs could lead to burning out the remaining lights because of an uneven distribution of electricity.In this guide, you’ll learn the following: The former is the easier and safer option that only requires cutting away a piece of the entire string of Christmas lights. With lights that are wired in a series, there are essentially two options: removing an entire section or removing just a few bulbs. Whereas, if the bulbs continue functioning – they are wired in parallel. If the bulbs surrounding the bulb you removed stop working, your lights are wired in series. Although most Christmas lights are wired in series, you can confirm by removing one bulb from anywhere in the center of the string. You also need to determine whether the lights you are working with are wired in series or in parallel. If your lights are going outdoors, make sure that you use outdoor/waterproof wire connectors. Always use caution when you’re working with exposed wires and don’t plug the lights in until all of the exposed wires are covered with wire connectors. Whether your lights are LED, incandescent, or any other, you always want to make sure that they are plugged OFF before you begin any work. We’ll walk you through all the various ways that you can cut your Christmas lights to length, so they are the proper size for your intended purposes. You first need to know whether your Christmas lights are wired in a series or as parallel, then you can determine if you want to remove an entire section of lights or just a couple of bulbs. The process is relatively simple, just requiring a little bit of know-how. In this case, you may be wondering: Can you cut Christmas lights to length? Or, perhaps a section of lights has burned out and you still want to be able to use the rest of the string.įortunately, it is possible to cut or shorten Christmas lights – whether they’re LED, incandescent, or something else. Maybe you only need a small section to finish up your roof or you want to add lights to your mantel but don’t need over 30 feet of lights to get the job done. When stringing your indoor or outdoor Christmas lights, it’s not uncommon to find ourselves in a situation where the lights are too long to accomplish the desired effect.
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