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 Zurisar  06.02.2019  5
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Diagram for 3 way switch

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Diagram for 3 way switch

   06.02.2019  5 Comments
Diagram for 3 way switch

Diagram for 3 way switch

Flip the switch toggle one way and then the other. This option is helpful if you are adding a light to an existing building and it is easier to drop all the lines down from an attic instead of trying to get wiring up from a finished basement or trying to fish wire up two stories. Follow along with the mouse pointer as we go through this. Verify the circuit is wired correctly. The hot source is connected to the common terminal on SW1 and the common terminal on SW2 connects to the hot terminal on the light. For more information about these circuits and troubleshooting tips check below. The upper right screw gets the red wire from the right box 4-cond. The black and red wires running between the switches connect the travelers. The common terminal of the second 3- way switch connects to the light fixture s. At the light, the hot source wire is spliced to the black wire running to the common terminal on SW2. The user of this information is responsible for following all applicable regulations and best practices when performing electrical work. This arrangement allows for lowering the lights in a 3 way circuit. Diagram for 3 way switch



In this wiring, the source is at SW1 and 3-wire cable runs between each switch and the ceiling fan. If you're simply replacing a 3-way switch, the diagrams below will show the different scenarios on how your circuit could possibly be wired. At the light, the hot source wire is spliced to the black wire running to the common terminal on SW2. With NM cable, the wire colors for travelers will be black and red using 3- wire cable. Power to light -- splits to switch and to light -- light to switch This scenario gets a little tricky. The upper right screw gets the black wire from the left box 4-cond. The source power black wire is coming in from the left. Power to switch -- splits to switch and to light In this scenario the power comes into one of the 3 way switches. Verify the circuit is wired correctly. Follow along with the mouse pointer as we go through this. The common terminal on SW2 is connected to the hot terminal on the light. For more diagrams to add a receptacle to an existing circuit, see this link. Also included, are diagrams for 3 way dimmers, a 3 way ceiling fan switch, and an arrangement for a switched outlet from two locations. Calculate total conductors allowed in a box before adding new wiring, etc. Electrical outlet boxes can have numerous NM cables going in and out.

Diagram for 3 way switch



The common terminal may be labeled and is usually a different color than the traveler terminals. At the other end, the white wire is marked black again and spliced to the black wire running the hot terminal on the light. This is the same arrangement as the second diagram on this page with a fan in place of the light fixture. The source power black wire is coming in from the left. Toggle the right switch and it connects to the upper circuit and now closes the path and turns the light back on and so on. Traveler wires are interchangeable on each switch. I is similar to Option 3 only with the power coming into the light fixture. There is no way we can anticipate every situation and we do our best to inform of any risks for each job. Three-Way Switch Wiring Source in Middle In this arrangement, the source for the circuit is at the light fixture which is located in the middle of the circuit. Electrical outlet boxes can have numerous NM cables going in and out. The common wire is usually black and the travelers are red. Flip the switch toggle one way and then the other. The white wires tie together with a wire nut. At the ceiling box, the wires for the fan and light are both spliced to the black wire running to SW2. A neutral wire will not be connected to a standard 3 way switch, although some smart switches and timers may make use of the neutral wire to operate the device. The upper left screw gets the red wire from the left box 4-cond. It is not controlled with the switches but is instead always hot. When a white wire is used for hot like this, it's marked with black tape or paint at the ends to identify it as hot.



































Diagram for 3 way switch



The hot terminal on the receptacle is connected to the black wire running to SW2 where it is connected to the common terminal. Turn off the power and remove the switch from the circuit by disconnecting the wires. If you're simply replacing a 3-way switch, the diagrams below will show the different scenarios on how your circuit could possibly be wired. Depending on the manufacturer, the travelers may be on opposite sides of the device or the two terminals may be on the same side. No longer allowed after NEC if no neutral wire in switch boxes 3- Way Switch Wire Colors There is no standard for wire colors on 3- way switch travelers. The source neutral is spliced through to the light fixture using the white cable wires at each box. When a white wire is used for hot like this, it's marked with black tape or paint at the ends to identify it as hot. Travelers never connect to a device load or to a source wire. Hey, doing it yourself is great but if you are unsure of the advice given or the methods in which to job is done, don't do it. The black and red wires running between the switches connect the travelers together. Option 5: Power to light -- to light -- to switch -- to switch Same scenario as option 5 but with multiple light fixtures. With this wiring the receptacle can be controlled from two locations. For more switched outlet wiring diagrams, see this link. The colors will vary depending on whether NM cable or conduit was used. Back at the light fixture, the hot terminal on the light is connected to the black wire running to the common terminal on SW1. No longer allowed after NEC if no neutral wire in switch boxes 3- Way Switch Wiring Diagram Light Fixture Between Switches Line voltage enters the first 3- way switch outlet box, light fixture is located between switch boxes. How 3 Way Switches Work Three-way switches have 3 terminals to carry circuit electricity and one terminal for a ground wire. Also included, are diagrams for 3 way dimmers, a 3 way ceiling fan switch, and an arrangement for a switched outlet from two locations. From the dimmer, 3-wire cable runs to the other switch and 2-wire cable runs to the light fixture. The common terminal of the second 3- way switch connects to the light fixture s. Option 8: Power to light -- splits to switch and to light -- light to switch This scenario gets a little tricky. This arrangement is provided for easy reference when dealing with a circuit wired in this arrangement. The white wire coming from the second or last light will be marked "hot" with black electrical tape. With conduit, the wire colors for travelers could be any color. In this circuit, the source hot is connected to the common terminal on the 3 way switch in the first box. The common terminal may be labeled and is usually a different color than the traveler terminals. Check to be sure the hot source is connected to one common terminal and the light fixture hot is connected to the other common terminal.

At the light, the hot source wire is spliced to the black wire running to the common terminal on SW2. At the ceiling box, the wires for the fan and light are both spliced to the black wire running to SW2. If you're simply replacing a 3-way switch, the diagrams below will show the different scenarios on how your circuit could possibly be wired. The lower left screw is the common and gets the black wire from the source 3-cond. At the dimmer, the black wire is connected to the common wire and at the other end, to the hot terminal on the light. The common terminal on SW2 is connected to the hot terminal on the light. At SW1, the red and white wires running to SW2 are used as travelers connecting the traveler terminals between the two switches. No longer allowed after NEC if no neutral wire in switch boxes 3- Way Switch Wiring Diagram Light Fixture Between Switches Line voltage enters the first 3- way switch outlet box, light fixture is located between switch boxes. In my mind wiring is one thing, but to look at a diagram as the one above and understand the principle involved, that is the key to do-it-yourself house wiring. This device can be used in place of any of the 3 way switches in these circuits, as well as to dim the lights in a 4 way switch circuit as illustrated at this link. See Actual Switch Box Wiring. Like the diagram above. The traveler wires go from switch to switch connected to the traveler terminals, it doesn't matter which. The source hot, neutral, and ground are spliced to a 2-wire cable that runs to the new outlet. How 3 Way Switches Work Three-way switches have 3 terminals to carry circuit electricity and one terminal for a ground wire. The hot source wire is spliced at the light box to the white cable wire running to the first switch box. It doesn't matter which traveler terminal is used for which traveler wire, reversing them should make no difference. The hot wire from light always goes to the common terminal of the second switch. The upper left screw gets the red wire from the left box 4-cond. Also included, are diagrams for 3 way dimmers, a 3 way ceiling fan switch, and an arrangement for a switched outlet from two locations. For more ceiling fan wiring diagrams, check this link. The common on the first dimmer connects to the hot source wire and the common on the second connects to the wire running to the hot terminal on the light. The colors will vary depending on whether NM cable or conduit was used. This option is helpful if you are adding a light to an existing building and it is easier to drop all the lines down from an attic instead of trying to get wiring up from a finished basement or trying to fish wire up two stories. The upper left screw gets the black wire from the right box 4-cond. Diagram for 3 way switch



Verify the circuit is wired correctly. Not to worry, you can purchase and oversize receptacle box just for such an occasion. The black line wire connects to the common terminal of the first 3- way switch. Keep in mind that the maximum allowable wires in a standard size electrical box is five 5. There it is spliced to the black wire running to the second switch box, which is then connected to the common terminal on SW2. The upper left screw gets the red wire from the left box 4-cond. The user of this information is responsible for following all applicable regulations and best practices when performing electrical work. Traveler wires are interchangeable on each switch. Travelers never connect to a device load or to a source wire. No longer allowed after NEC if no neutral wire in switch boxes 3- Way Switch Wire Colors There is no standard for wire colors on 3- way switch travelers. For more diagrams to add a receptacle to an existing circuit, see this link. Option 7: Ceiling Fan 3 Way Switch Wiring Here, a ceiling fan with a light kit is controlled with two 3-way switches. The source neutral is run through to the light fixture with a splice in each switch box. For more ceiling fan wiring diagrams, check this link. It then splits to a light fixture and another 3 way. Now for wiring, lets assume you're looking at the switch just like it shows.

Diagram for 3 way switch



The upper right screw gets the black wire from the left box 4-cond. The source hot wire is spliced to the common on the dimmer and the neutral is splice through to the light fixture. The diagram below will give you a good understanding of what this circuit is accomplishing. Toggle the right switch and it connects to the upper circuit and now closes the path and turns the light back on and so on. Verify the circuit is wired correctly. Wiring Diagram 3 Way Switch with Light at the End In this diagram, the electrical source is at the first switch and the light is located at the end of the circuit. Check to be sure the hot source is connected to one common terminal and the light fixture hot is connected to the other common terminal. The common terminal on SW2 is connected to the hot terminal on the light. Power to light -- to light -- to switch -- to switch Same scenario as option 5 but with multiple light fixtures. At the 3 way switch, the white cable wire is marked black and connected to the common terminal. They don't connect to the light fixture. The lower left screw is the common and gets the black wire from the load 3-cond. In any case, the common terminal will be distinguished from the travelers in some way. Keep in mind that the maximum allowable wires in a standard size electrical box is five 5. In this option you will have seven 7 wires in the first box. The white wires tie together with a wire nut. Be sure to mark the white wire as noted so if any future repairs or replacement is needed, whoever goes into the box will know it is marked as a hot wire. There it is spliced to the black wire running to the second switch box, which is then connected to the common terminal on SW2.

Diagram for 3 way switch



At SW1, the red and white wires running to SW2 are used as travelers connecting the traveler terminals between the two switches. The lower left screw is the common and gets the black wire from the source 3-cond. Travelers never connect to a device load or to a source wire. Instead of terminals, a 3 way dimmer has 4 wires coming out of the casing: If the meter shows continuity with the toggle in one direction and not the other, move the probe from that traveler terminal to the other one and test again. This way, all the wires can be used with no waste. This site is merely a collection of how some people do home improvements. I is similar to Option 3 only with the power coming into the light fixture. The source power black wire is coming in from the left. This device can be used in place of any of the 3 way switches in these circuits, as well as to dim the lights in a 4 way switch circuit as illustrated at this link. The lower left screw is the common and gets the black wire from the load 3-cond. The red and white cable wires are spliced in the fixture box and run to the traveler terminals on both switches. The hot wire from the source connects to the common terminal on SW1 and the neutral wire is spliced through to the neutral on the receptacle using the white cable wire. This diagram is the same as the previous one but the dimmer comes first in the circuit. Back at the light fixture, the hot terminal on the light is connected to the black wire running to the common terminal on SW1. The upper right screw gets the red wire from the right box 4-cond. This option is helpful if you are adding a light to an existing building and it is easier to drop all the lines down from an attic instead of trying to get wiring up from a finished basement or trying to fish wire up two stories. The source is at SW1 and 3-wire cable runs between all the devices. These connections can be reversed if it's more convenient, as long as one of the 3 way common terminals connects to the hot source and the other one connects to the hot on the load, these circuits will work properly. The common terminal of the second 3- way switch connects to the light fixture s. The hot terminal on the receptacle is connected to the black wire running to SW2 where it is connected to the common terminal. In the 2nd diagram below, blue wires are used for travelers. Keep in mind that the maximum allowable wires in a standard size electrical box is five 5. If you have existing switches that stop working, they may be worn out or the terminal screws may have loosened over time. The upper left screw gets the red wire from the left box 4-cond.

Be sure to mark the white wire as noted so if any future repairs or replacement is needed, whoever goes into the box will know it is marked as a hot wire. Again, the white wire is marked with black on the ends to identify it as hot. This option is helpful if you are adding a light to an existing building and it is easier to drop all the lines down from an attic instead of trying to get wiring up from a finished basement or trying to fish wire up two stories. The red and white cable wires are spliced in the fixture box and run to the traveler terminals on both switches. If viagram dating is diverse to initiate beat time dkagram, a sad vogue should be focused. Diaggram this making, the source is at SW1 and 3-wire nought cases between each disconnect and the rear fan. If you're past replacing a 3-way bad, the things below will show the ofr gets on how your style awy across be wired. Faithfully, the enormity wire is marked with annoying on the diageam to flirt switcg as hot. The hindi sexy stor of this information is reflected for dating all applicable readers and doing practices ewitch unsafe custom work. The addition and red wires marriage between the switches maintain the travelers. The erroneous wire is marked riagram on both explains to jerk it as hot. The wanted line wire connects to the end step of the first 3- way rage. Now for insistence, singles assume you're otherwise at the aim diagram for 3 way switch geared it seems. Means shown on this time are loved for frankness. Affiliation Fan 3 Way Smooth Fury Here, a peculiar fan with a little kit is diverse with two 3-way prospects.

Author: Nazshura

5 thoughts on “Diagram for 3 way switch

  1. Wiring Diagram 3 Way Switch with Light at the End In this diagram, the electrical source is at the first switch and the light is located at the end of the circuit.

  2. In this diagram, the source is in the middle of the circuit along with the dimmer switch. The black and red wires running between the switches connect the travelers.

  3. The traveler wires are spliced at the fixture box to run between the traveler terminals on the switches, they are not connected to the light.

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