![]() Note that the diagrams below assume that you’re following all recommended practices for safe installation of electrical circuits. Author: Terry Peterman Category: Switches & Receptacles, Wiring Diagrams This diagram shows connections when the power comes into the first switch, on to the second switch and then on to two or more lights switched by the 3-way circuit. For clarity, check out the illustrations below. Detailed wiring diagram of 3-way switches controlling more than one light are illustrated. To add a second light which is switched with the first one, the switched line, neutral and earth need to be. The other two wires can attach to either of the paired terminals. Adding an extra cable to the existing ceiling rose. ![]() To do this, put a piece of tape on the wire that goes to the “common” (third) terminal screw. When replacing an existing three-way light switch, be sure to return the wires to the proper screw terminals. Identify and label the connected wires on the existing switch: The Hot or Common Wire (usually black and connected to the black or dark screw terminal on the. The most common is to daisy-chain the light fixtures by connecting them to each other and hooking the first one up to the switch. The green screw at the bottom end is for attaching the ground (green or bare) wire. Or you can use multi-location dimming switches. And another dimmer on the line leading out of the 2nd switch. Such as placing one dimmer on the line leading into the first switch. For example, the switch shown below has one silver and one gold screw opposite one another and a bronze screw in the third position. If you set up a 3-way switch for your light, there can’t be multiple dimmers. Unfortunately, they are not standardized. Not all three-way switches have these terminals placed in the same configuration, so you have to pay attention to the terminal screw colors (and the instructions that come with the package) when wiring a 3-way switch (or a pair of them). On most 3-way switches, two of the terminals are the same color (typically silver or brass), and the third terminal, called a “common terminal,” is a different, often darker, color. Smart Devices Protect Your Home During Power Outages & Surges.Four-Way Switch Wiring | How to Wire a 4-Way Switch.
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