Broken wires might not have enough slack to splice without straining the new connection. A wiring harness consists of many wires cut to exact lengths, each selected for a specific temperature range and voltage. Many parts of the system use stranded wiring that resists fatigue faults better than solid conductor wiring. Solder the connection to provide additional protection and conductivity.Wires in a range seldom fail due to mechanical stress.Wrap each wire around the other wire several times until you run out of wire.Bend the top wire down and over the bottom wire, and vice versa. Hold the wires parallel to one another.It’s ideal for joining two wires that will be kept under tension. Making a Lineman’s SpliceĮlectricians started using the lineman’s splice, or Western Union splice, in the early 1900s. If you haven’t set up your junction box yet, use your needle-nose pliers to attach clamps into the openings on the opposite ends of the box. You can skip this step if you’re using a wire cap to attach the wires. Slide a piece of shrink tubing over the wire you’re splicing as you’ll need it once you complete the splice. Remove any damaged areas before you begin splicing. Look for burnt wire insulation, cut wires, nicks, or bite marks. Then, remove about ½” of the plastic sheathing from the individual copper wires.Įxamine the wiring for signs of damage. If you’re splicing insulated wires, use a wire stripper to remove about five inches of the outer sheathing from the wire. Never splice wires if you’re unable to cut off the power. Before Splicingīe sure to cut off power to the wires you’re splicing. How to Splice Electrical Wiresįollow this step-by-step guide, and you’ll be well on your way to splicing wires like a seasoned professional. Never use electrical tape to shield your connections. Attach the junction box to a wall stud or ceiling joist in a spot that won’t place undue stress on the wiring.īe sure to finish all your connections with a shrink tube or a twist-on connector. Junction boxes protect from electrocution and fires by containing any sparks that occur during a short circuit. When splicing wires, always use a junction box to place all the spliced wires. As the current travels through the splice, it can overheat and create a fire risk. When splicing wires of different gauges, the lower gauge wiring can handle more amperage than the higher gauge wire. When you splice wire, always make sure you’re using the same gauge. Ensure the power is off using a non-contact voltage tester on the hot wires and ground wires before you get started. Be sure to follow the tips below to ensure you’re staying safe.Īlways disconnect power to the circuit at the service panel before you begin working. Whether it’s your first wiring project or your 100th, safety is critical. Read on as we cover the ins and outs of how to splice electrical wires safely for your DIY projects. You do this for many projects, like relocating light switches or outlets and making repairs. Splicing wire is a technique for joining two pieces of wire together to carry an electrical current. You might need to splice wires to extend a wire, repair damage, or connect one electrical wire to another. As a homeowner, it’s a matter of time before you’ll need to learn some basic electrical skills as part of your home improvement projects.
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