Questions tagged [multiway-switch]

Use this tag for any time lights, fans, or devices are controlled from more than one wall switch location.

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6
votes
2answers
7k views

How does a three-way light switch work?

A three-way light switch allows the light to be controlled from two locations. How does this work?
5
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5answers
916 views

Are all switches in a 4-way circuit the same?

I have a four way switch in the house (I assume that is the correct term, 4 switches all controling the same light; flipping any one of them toggles the light; no other lights are affected). I am ...
5
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1answer
238 views

Is it okay for an electrical switch to get warm?

I installed a FEIT Electric dimmer switch on a circuit that controls 2 overhead lights. I noticed that, even when not using the dimmer, the toggle portion of the switch is warm to the touch. Is this ...
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5answers
5k views

Incorrect voltage at light sockets

Light bulbs on our kitchen lighting circuit need frequent replacing (lasting only a few months.) All other circuits in the house behave normally. There are three switch legs on this circuit: 6 ...
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3answers
5k views

3-way switches no longer serving their purpose

I apologise if there is an answer to my question in one of the other multiple 3 way switch questions, but if there is I couldn't find it. I just bought an old house, built in 1967. I'm replacing the ...
4
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2answers
615 views

3 way switch with outlet always live

First box has 14/2 from panel, 14/2 to outlet, 14/3 to the other switch Second box has 14/3 from the first switch and 14/2 to the light.. how can I wire these up for 3 way switch.
3
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2answers
128 views

Light Fixture Stopped Working After Replacing Its Three-Way Switch

I have a halogen light fixture that is powered by a three-way switch at the top of the stairs and another three-way switch at the bottom of the stairs. After I replaced both switches with new 3-way ...
3
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2answers
561 views

Multi gang switch boxes - Is it okay to keep the same branch neutrals separated for the different lighting/switching circuits?

I recently learned from this community about the importance of keeping currents balanced in each cable. In other words, current in one direction should be canceled by the same amount of current ...
3
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2answers
4k views

How can I test a three-way switch to determine if it's working?

I have a light fixture in my house that suddenly stopped working. I tried replacing the lightbulb and still non luck so I decided to try and see if it was the three way light switch itself using a ...
3
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3answers
2k views

When installing a three way dimmer switch, does it matter which switch is the dimmer?

My grandmother called me the other day to troubleshoot from half way accross the country. She installed a three way dimmer switch in her dinning room at the location most used. It turns the light on ...
3
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1answer
138 views

Need help with 3-way wiring (diagram included)

Could really use some help. I'm putting in some GE Z-Wave plus switches in my new house and have come across my first 3-way switch. I think the far left Romex in box #1 is the cable that goes between ...
3
votes
1answer
92 views

Where to locate light switches?

I live in a 1920s row home. It is 17' x 35'. We are planning on essentially rewiring the whole house since there are limited outlets and all the switches need to be replaced and the ceiling lights ...
2
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3answers
460 views

Replacing two 3-way dimmer switches with two non-dimmer 3-way switches

I had two Lutron 3-way dimmer switches for my bedroom lights. They looked something like this: https://www.amazon.com/Lutron-MAW603RH-WH-Electronics-Maestro-Dimmer/dp/B000BQMVXC I replaced the bulbs ...
2
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1answer
483 views

Help with 2 Dimmer Switches and bad wiring

Two dimmers in one "box", each going to a separate room. One set of lights started to flicker, so I figured I needed to replace the switch. I've done dimmers before. But when I opened the box, whoever ...
2
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2answers
56 views

Wiring new light switch

I am trying to install a motion activated light switch in my basement of my condo in the United States. On the switch it states that it's max load is 500 watts which should be plenty since the switch ...
2
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2answers
484 views

Continuous power between multi-gang boxes with 3 way switches

Apologies if this question is answered elsewhere. I couldn't find it specifically. I'm planning on installing two multi-gang switch boxes, where all of the switched lighting will be on the same ...
2
votes
2answers
277 views

wiring of occupancy switch in 3-way situation (odd-looking instructions)

I'm looking to replace one of the two switches (wired in a standard 3-way configuration) which control an overhead light in a utility room, with an occupancy sensor switch. The room is small enough ...
2
votes
1answer
77 views

Three-way switch wiring behaving oddly

The hot wire and traveler wire behave oddly in a three-way switch in a 1950s house. The metal box has three wires - red, white and yellow. The red-color wire measured 116V, so I assumed it's the hot ...
2
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1answer
201 views

Help with replacing 3 way switch with a smart 3 way switch

I'm trying to replace existing 3 way switches with 3 way smart switches to control the lights of my light/fan combo. The current set up is a dimmer in 1 location and a toggle switch on the other side ...
2
votes
2answers
409 views

Determining which 3 way switch is wired wrong

I have two 3 way switches controlling one light. Sometimes when the light is on neither switch will turn off the light but one of the switches will turn light off if switch is placed half way between ...
2
votes
1answer
134 views

Three Way Switch Works With Power Off

I have a switch box with 3 switches in it, each powering a different light. All three switches are supplied by pigtails from one incoming cable. Two switches are simple single pole switches and when ...
2
votes
1answer
597 views

One light switch powers two separate light switches

At the top of my stairs leading to my basement, I have one light switch (Top Switch) that powers two separate light switches at the bottom of my stairs. At the bottom of my stairs, the left light ...
2
votes
1answer
212 views

Need help figuring out X11 3-way switch connections (6 wires from one box)

So I recently bought a house, it was built in the 80s and the previous owner had installed X10 switches (before X10 was a thing, when it was called DHC or Decora Home Controls). Anyway, the garage has ...
2
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2answers
4k views

3-way switch loop wired with two 14-2 and one 14-3

I'm replacing a single 2-way ceiling light with recessed lighting, and discovered what I think is a switch loop when I pulled the ceiling light out. The confusing part (to me) is that the ceiling ...
2
votes
1answer
2k views

Can I install a photocell on a 3-way switched circuit?

I have a set of front exterior lights on my house which are controlled by two 3-way switches, one in the garage and one in the front entry way. I would like to install a photocell so that I can leave ...
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1answer
567 views

3 way switch mystery

Hoping someone can help me figure out whatever it was was they did. I recently rewired a three way switch be eliminating one switch altogether and using the other as a typical switch. Everything ...
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4answers
160 views

Indicator with two-way switch

We have a two way switch for an exhaust fan. The fan is out of sight from the switches. So, the problem we face is we have no clue if the fan is on or off looking at the switch. I tried to see if ...
1
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1answer
31 views

Three way switch with intermittent light functionality

I have a fluorescent light fixture in my kitchen that works intermittently. Or, rather, has been working intermittently, but now has stopped working. I suspected that one of the three way switches ...
1
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1answer
51 views

Can a motion sensor switch be installed as part of a pair of switches?

I have a switch to my hallway by my garage. The other switch is by my stairs. I have had a motion sensor on the switch by the garage for about 15 years and it worked fine. It finally broke so I ...
1
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1answer
75 views

Adding back removed 3-way switch from 4-way setup

I made a terrible mistake. I removed a 3-way switch from a 4 way switch setup without labeling the existing wires. Now the light the switch was attached to doesn't come on. I was going to put a blank ...
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2answers
45 views

Wiring ceiling fan/light properly on 2 different floors

I have a room with a cathedral ceiling and a mezzanine. On the ceiling I installed a ceiling fan with a light. I want to be able to control "three-way style" the fan and the light from the 2 floors (...
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2answers
23k views

Quickest way to identify line wire and load wire in a multiway switch

I am upgrading a lot of light switches in my home to Z-Wave smart switches. It is easy when it is a simple switch, but a 3-way, 4-way or n-way switch circuit is trickier. When doing so, I need to know ...
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4answers
3k views

Can I “flip” a light switch (top/bottom position)

I have a Decora 3 way switch, on the metal part it clearly label one side as the top. It is installed correctly right now. So right now, if both switches are on the "off" (down) position, the light ...
1
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1answer
76 views

Do I need a neutral on the other end of a three-way switch?

I'm looking at adding a three-way switch to a room. I'll probably drop the hot and neutral into Box #1, but 12/2/2 (hot, 2x travelers and a neutral) is fairly esoteric cable (nobody locally sells it ...
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vote
2answers
61 views

Basement lighting four rooms

So in my basement I want to add lights to 4 rooms. A total of 18 LED lights on 5 switches from one power feed. This would be a 15 A feed all 14-2 wire. Switches 2 & 3 would be a 3 way switch ...
1
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2answers
1k views

4-way switch - common wires are not normal

I am not an electrician and I have read all I can about 4-way switches/circuts. I am trying to replace a 4 way switch + 2 three way switches with zwave. I have done other 3-way installations (with ...
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2answers
63 views

Switching light without three way

Just looking to get someone's opinion on the legality or practicality of this circuit: There was another question posted recently where someone was asking about the ability to switch a second light ...
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2answers
8k views

Adding Light to Existing 3-Way Switch Configuration

I currently have a 3-Way light setup like the one pictured below but I want to add an additional light to the circuit on the right hand side switch. I can not add any wires between the two lights as ...
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2answers
1k views

Looking for triple 3-way switch [closed]

Where can I find a triple, 3-way switch (toggle style) were all of the switches are 3-way. All triple switches I find only have one 3-way, the other two switches are single pole. Here’s why I need a ...
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3answers
1k views

Replaced light fixture, now 3 way switch doesn’t work

I replaced an old lighting fixture with a remodel can and led trim, but in doing so the three way switches no longer work. I didn’t touch either switch’s wiring, but now the switch with the circuit ...
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3answers
932 views

Issue replacing a regular 3 way switch with smart one that requires neutral

This is what my downstairs 3 way switch looks like: The new smart switch requires a neutral, but it appears that the white wire is the hot wire, I checked with a non-touch voltage tester and it is, ...
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2answers
54 views

How to add a lamp on the other side of the switch series?

I have a fairly standard setup here. A lamp controlled by 3 switches, the middle of which is a 4-way switch (but I think that's fairly irrelevant). I would like to add an extra lamp, controlled by the ...
1
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1answer
41 views

Light switch wiring rats nest

Fixing some switches and adding Wifi switches to a home I just bought. I pulled out some old style switches from this box and added 2 WiFi switches plus a 3 way paddle on the right. I believe a 3-...
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1answer
74 views

3-way switch tied to box, one switch removed, can't make sense of it

I'm starting the question over.I'm having a hard time making sense of what's going on and I found out the other switch wasn't removed. I have a light connected to two switches. One switch isn't ...
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1answer
1k views

Running power to a single switch from a three way switch

In my garage I have a three way switch that powers the ceiling lights in the garage. There is one switch near the garage entrance near the garage doors, and one switch near the back of the garage. I ...
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2answers
2k views

Smart switch wiring with no neutral

Long time reader, first time poster. Working on updates for our new house and I bought a few lutron caseta switches the other day to wire up in our front entryway. I went with the PD-6ans which ...
1
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1answer
98 views

Three-way switch puzzle

I have an outdoor light controlled by a pair of 3-way switches, A and B. The switch B is much closer to the light. Here are the behaviors I observe. During the day: A: Up B: Up or Down Light:...
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1answer
93 views

Two Lutron occupancy dimmers for one light

My setup is as follows. Hot -> occupancy dimmer 1 -> traveler 1 -> light load Hot -> traveler 2 -> occupancy dimmer 2 -> light load It works ok, if they are both triggered at %50 dim the light turns ...
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1answer
641 views

Installing a light+fan combo switch - red, black, white wires

I've started installing a fan that has me stumped. I'm not great at electrical, but have installed several fans. This is the first true combo switch I've tried though (the others being a remote-combo ...
1
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1answer
88 views

Thoughts on this 3-way wiring job

Greetings from Australia I'm in the process of putting Z-wave nano dimmers behind my 240v light switches and up to wiring an interesting 3-way switch config backing 3x LED drivers. This is what I ...