How to Hook Up a Home Light Switch

Two way switch hook up

Power Through a Switch Box Two three-way switches control one light with the electric power coming through the first switch, flowing to the second switch, and then to the light fixture. Which of the brass-colored screws a traveler wire connect to does not matter.

Power Through Switch These lights between switches have the electrical power coming through a switch. All ground wires bare copper are all now connected incoming ground, load ground and switch ground.

It is very important to connect the ground wire to the switch as well. The traveller wire is connected in the light ceiling boxes, with a length of neutral wire taped black to indicate a hot wire.

The white or neutral wire goes completely through the connection system with pigtail connections at both switches and the first light box. See color key in each figure. Local and provincial codes should be checked before starting any wiring project. Power Through Light End-wired lights are controlled with two three-way switches with power routed through the light boxes to two-wire cable to the two switches.

How to Hook Up a Home Light Switch

The traveller wire goesSplice wires together and

Splice wires together and top with a wire connector. Power Through Light Two three-way switches control one light with the electric power coming through the light on a two wire cable. Most codes dictate that all wire connections must be placed inside a switch, receptacle or junction box. Let's assume the load you are controlling is a light.

This is a completed circuit

Three-wire cable with a ground wire is used for this connection. This is a completed circuit. The traveller wire goes through the light ceiling box and that the white wire is taped black between the fixture and second switch. White or neutral wire taped with black electrician's tape is used as black power wire to make connections throughout. Make the connections by placing the wire loops under the screws in a right-hand direction and tightening the screw snugly down on the wires.

Threewire cable with a ground

Note that the shadings of the wires in the illustrations represent actual color. All of the four terminals are brass colored. The white wires are wire nutted together so they can continue the circuit. End-of-Run Lights Controlled by Two Three-Way Switches These end-of-run lights are controlled by two three-way switches with a two-wire cable power source coming through the first three-way switch. Peel back the sheathing and trim it square.

This makes for a safe protected circuit by having all grounds intact. So what have we accomplished. The system also requires three-way switches. Grounding screws often are furnished with boxes and are green. Some light fixtures with a chain pull have a ground connection.

White or neutral wireMake the connections by placing the

The ground wire is pigtailed throughout. The red traveller switch wire runs just between the two switches, not the light. The cable should also have a ground wire, or a total of four wires in the cable. If possible, lay the cable on a flat, firm surface to slit it properly. Check the wires in the device box with the non-contact voltage detector.

It should also help in understanding the functions of each type of switch. Power Through Light This light is between switches with the power source from the light. The ground wire is pigtailed with a wire connector at the switch boxes and the ceiling box. This simple diagram below will give you a better understanding of what this circuit is accomplishing.