![]() ![]() Splicing Wires Without Using Butt Splice Connectors Voltage drop calculator (optional but recommended, see below for more details ).Butt splice connectors (optional, if you are using solid core wires).Electrical tape or heat shrink tubing (optional).If two dissimilar types or sizes of wire are attempting to be joined together, one must take into account this difference in resistance before choosing an appropriate splice technique!įor instance, if one were splicing 18AWG THHN with 14 AWG THHN (the same voltage), it would not be advisable to melt the 14 AWG wire into the 18 AWG wire, as this would create high resistance joints. The larger diameter wires will have less resistance than smaller diameter wires for equal length runs due to their thicker cross-sectional area. This law simply states that the amount of current (amps) flowing through a conductor is directly proportional to the voltage supplied by the source and inversely proportional to the resistance offered by the conductor at any given temperature. No matter what size wire you are using, the laws of Ohm’s Law apply. If you are attempting to join dissimilar gauges of wire, there are different methods that may be employed based upon the size difference between the wires being joined! Size Of Wires Source: The instructions provided in this article are for joining similar types of wire (i.e. Good quality splices are critical in minimizing unwanted resistance in your circuit which can be detrimental to its performance. This article provides you with information on how to splice (join) low voltage landscape lighting wire, the tools and materials needed, and instructions to make good quality splices. With a few tools and some work, you are able to modify your lighting landscape. There's more reason for NFPA to explicitely ban its use than to allow it.Landscape lighting is an excellent option to emphasize and enhance the features of your yard and house, however, If you’ve decided to install the lighting yourself You’ll notice that it’s usually available in kits that include pre-cut pieces of wire.įor many it’s acceptable, but when your yard is bigger than what the manufacturer suggests or you have a unique idea regarding where you can place the lights, these lengths might not be sufficient and you might need to connect low-voltage lighting wire. It takes more time, takes a higher level of skill, requires insulation to be applied separately, and is difficult to reverse. Why? Why even bother? There's no reason to do a solder splice in this day and age. Only exception I can think of would be official US Government mil-specs and such, which are widely recognized as an acceptable listing authority, and do go into detail on methods like this.Īt the end of the day, though. As listings cost money, nobody is going to get a DIY soldered splice method UL-approval, so the status quo remains. One author's instruction on how to make a western union joint isn't the same thing as NFPA endorsing it. While the solder joint has has no official approval beyond what the AHJ is willing to allow. ![]() The difference is that wire nuts are UL tested and approved, and the instructions printed on the packaging- easy to do, easy to comply with, and easy to check. If you went into a box and did a bunch of Fig.21s and Fig.22s, would your AHJ approve it? I'm amazed that this forum is looking for loopholes as opposed to the exact letter of the law. How many twists are acceptable in a wire nut? What length do you strip the wires in a wire nut? How much strength to separate a wire nut?Īs stated earlier insulation is a different issue altogether. ![]()
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