How do you hook up a three way switch

Looking for a 3 way switch wiring diagram? Here are a few that may be of interest .
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Make a J-hook in the wire with a pair of pliers and wrap it around the black screw on the light switch. Tighten the screw to secure it in place. Cap the wires connecting the source and the switch. The screw is typically on the bottom of the switch. Connect another black wire from the light to the original switch location.


Use the existing 2-wire conductor leading from the light to the switch. Attach the wire to the black screw on the switch. Cap the white neutral wires to each switch box. Place a plastic cap on the end of the white wire from the top conductor in the new switch location. Take the neutrals from the other end of the top conductor, the power source, and the light and cap them in the original switch location. Neutrals need to be in place at every switch box according to the NEC electrical code.

Older homes may not have neutrals in the switch boxes. It is okay to replace switches in this instance. If you install smart switches, the neutral will attach to them and make it work. Connect the traveler wires using the bottom conductor.

3 Way Switch Wiring Diagram

Use the black and white cables from the bottom conductor to attach the traveler terminals on each switch. Use a pair of pliers to bend the exposed ends of the wire around each screw. Mark the white traveler cable with a black piece of electric tape so you know that the wire is hot.

Cap the equipment grounding conductors together at each switch and the light. Find the grounding screw on the top or bottom of each of the switches.

3-way Switch Wiring - Electrical

Wrap the wires tightly around the screw and use a screwdriver to tighten the screws. Cap the grounding conductors at each switch box. Push the wires into the back of your box. If your switch box is made of metal, the grounding conductor needs to bond to the box as well.

Replace the switch box covers. Screw the switches into the electrical box and secure the wall plate over the opening. Flip the breakers back on and test the switches.

Your Answer

Is it safe to hook the ground wire to the return wire to get it to work? By doing this, you're creating a parallel path for both the equipment ground and neutral ground to travel back to the electrical supply, which means someone could come in contact with a surface that is bonded to the equipment ground and get shocked. Not Helpful 0 Helpful 0.

Wiring a 3-Way Switch

Home Questions Tags Users Unanswered. How can I add a 3-way switch to my light? I'm trying to install a 3-way switch for a specific light but I'm not sure how to do the wiring. The existing switch box has quite wires inside: How would I install a second three-way switch to this setup? SofaKng SofaKng 1 2 8. Then of course you'll have to swap your existing switch for a 3-way switch. When you ask "how," it's very vague-- there are quite a few steps to pulling wire, installing box es , and wiring traveler wires. Thanks for the information! However, what wires do I connect from the new to my existing switch?

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With conventional wiring, line voltage enters the first 3- way switch box. Black common wire is usually wrapped around the two traveler wires on a 3- way switch. Multiple Switch Wiring 3- way and Single Pole. Alternate 3- Way Switch Wiring. Alternate 4- Way Switch Wiring.

Ceiling Fan Switch Wiring. Motion Detectors and Occupancy Sensors. No longer allowed after NEC if no neutral wire in switch boxes Alternate 3- Way Switch Wiring Diagram 2, NM Line voltage enters the first 3- way switch outlet box, light fixture is located between switch boxes.