Step2: Connect the common wire. In a 3-way switch setup, there are four wires involved: a hot wire (black), a common wire (usually black), and two traveler wires (usually red). The common wire connects to the black wire in the first switch box. Strip about 3/4 inch of insulation from the end of the common wire and connect it to the black wire 41 Wiring Step 1: Identifying and Preparing the Power Source. 4.2 Wiring Step 2: Installing the First 3-Way Switch. 4.3 Wiring Step 3: Extending the Wiring with 14-2 Romex. 4.4 Wiring Step 4: Installing the Second 3-Way Switch. 5 Testing and Troubleshooting: Ensuring Proper Functionality. 6 Conclusion. Thistype of switch allows you to turn the lamp on and off from two different locations. To wire a 3-way lamp switch, you will need a few tools and materials, including a screwdriver, wire stripper, electrical tape, and a new 3-way switch. It’s also important to turn off the power supply to the lamp before starting the wiring process. amazon_link asins='B07T26MVYC,B074V8PG51,B06W9NWFM3' template='ProductCarousel' store='azhb-wp-amazon-link-builder-20' marketplace='US' link_id='f90b-4fbb-b6f4-232b3b6dfff5'] This page describes the most common wiring methods for 3-way switches. Use these diagrams to identify the method that was 4Wire the 3 way with power in the switch. When wiring a 3 way with power in the light do you need to take a little different step. Power from the panel with 14/2 would come into the light box first or the octagon. The white wire from First pick your wire type. You need to either use a 14-3type NM cable, or a 12-3 if you’re connecting to 12-gauge wire. The breakerwill affect this decision as well. Once you’ve correctly identified your wires, feed the cablesto the light. If you already have a space for the wires to go you canfollow that path. Theright 3-way (center switch) has neither hot nor neutral. The three wires present there are: messenger 1; messenger 2; switched-hot. Since you have neither hot nor neutral, that far 3-way is dead as far as feeding power off it. Towire a 3 way light switch, you'll need 2 3-way light switches, 2 2-wire non-metallic cables, 1 3-wire non-metallic cable, and 2 6-inch grounding wires. First, run a 2-wire cable from the wall power to the black screw on 1 of the switches. Then, connect the 2 switches by splitting the 3-wire cable apart and attaching each of the 3 wires to .

3 3 way switch wiring