Wiring of 3 way light switches is certainly more complicated than that of the more common single pole. It is not unusual for the wires inside of an outlet box to be covered by spray paint from the initial construction of a dwelling.
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Installing a dimmer switch with multiple switches. A good rule is to not exceed more than 80 of the rate maximum for the dimmer switch. If the light is controlled by two switches be sure to buy a three way dimmer switch. Finish the job by installing the cover plate and turning on the power to test the new dimmer. When installing dimmers for 3 way switches remember to buy a special 3 way dimmer switch it will say at the store and on the package. Any electrician will tell you that this will not work for a regular double switch three way circuit. Since they are all currently up down flip switches do i need generic replacements and a new panel for these that match the.
Also included are diagrams for 3 way dimmers a 3 way ceiling fan switch and an arrangement for a switched outlet from two. Multiple switch wiring 3 way and single pole. Identify the light circuit turn it off and tag it with a note before working with the dimmer switch wiring. It doesnt matter if you reverse the two switch wires to a single pole dimmer. The other switches you can have more than one must be on off switches only. If not you will have to put the dimmer you purchased on one of the 3 way switches spdt of which there are two in the circuit.
That will be the one on the odd colored usually dark gray screw. There are three switches on many of these panels. Humming or buzzing dimmed lights. To make sure no one switches off the not smart switch leaving me unable to use smart functions on it. One for an outlet one for the lights and who knows what the third is for. Before removing the switch be sure to mark which wire is common.
On this page are several wiring diagrams that can be used to map 3 way lighting circuits depending on the location of the source in relation to the switches and lights. However you can set up specialized two way dimmers using a master and slave switch. 3 way dimmer switch wiring diagram multiple lights. Three way switches allow for controlling a light fixture from two separate locations these are usually used at the top and bottom of a flight of stairs or at two different entrances to a room. When using a 3 way dimmer switch you should only have one dimmer on the circuit. In this setup the light level is controlled from a single location whichever light switch you replace with the dimmer switch.
Also only one switch in this setup can be on a dimmer. Two dimmers may be installed to control one or more lights as long as the dimmer switches are compatible with each other such as one being the master and the other being the slave. Installing the two way dimmer switch traditionally you cannot dim a light from two different switches as it will cause a conflict in the circuitry. Screw the dimmer to the box with the screws provided. The spdt 3 ways will have only 3 wires plus ground. Unlike 3 way dimmer switches which cannot support multiple dimmers on the circuit multi location dimmer switches allow for dimming controls in more than one location.
See buying a dimmer switch below for more details if you have a double box for two switches calculate the required box size and install a larger double box if needed. For lights that have multiple switches one on north and one on south wall for same light do i need two smart switches for the one light.
Gallery of Installing A Dimmer Switch With Multiple Switches
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