Questions tagged [switch]

For questions about switches, i.e. electrical devices used to manually open and close an electric circuit on a routine basis.

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What requirements are needed to replace an attic fan control switch?

I have an emerson high speed fan switch in one of our houses. It is just a a knob that controls the fan speed. I would like to replace it with a different color one and one that includes a timer....
0 votes
1 answer
144 views

Why did a new switch switch trip three breakers?

I replaced an old light fixture over my kitchen sink with an LED light. Everything worked well. The switch beside the sink with a standard outlet in same box were old ( at least 40 years) also. I ...
0 votes
2 answers
41 views

Dynamically switching modes -- pair of 3-way switches controlling pair of lights vs. individual control of each light from nearest switch

I want to add a switch to an existing lighting circuit to toggle the function of the circuit. Currently, I have a 'standard' 3-way lighting circuit with two switches at opposite ends of a space, ...
0 votes
0 answers
35 views

Replacing a fan switch with 3 black wires with a smart switch

I have a switch which has a switched hot and an unswitched hot wire (wire attached to the backstab) going through it. I want to replace it with a tp-link Kasa smart switch. I tried attaching both the ...
1 vote
0 answers
35 views

Wiring to ceiling fan/light

I recently purchased an older home. In the living room, it has a ceiling fan with light kit. It has a single pole switch (no ground) controlling the power to the fan/light. I'm replacing the switch ...
0 votes
0 answers
22 views

Can you replace a switch to just 2 toggle switches for the low and high voltage? [closed]

Can you replace a 3 position central vacuum switch to two separate toggle switches?
2 votes
1 answer
9k views

Switches in other bedrooms turning on different lights after I put new light up

I recently put up a light in my bedroom but the switches in other rooms now turn on different lights, there are 9 wires altogether coming through the ceiling, 3 earth which are connected together, 3 ...
0 votes
1 answer
84 views

What should I do with old switch wires?

I am redoing all my electric (some details here: Is my new electric/subpanel plan correct?) - all of the cables currently in the house will be eventually disconnected, but (due to staples in hard-to-...
1 vote
4 answers
2k views

Convert outdoor spotlight from switch control to constant power?

I currently have a motion sensor floodlight in the backyard but it only gets power when I flip the switch which is indoor. I am swapping out the floodlight for a camera + floodlight combo and I don't ...
1 vote
3 answers
1k views

Help me understand the wiring - Two neutrals, one hot, switched outlet

This double outlet is connected to a switch. Both outlets depend on the switch. If the switch is on then both have power. If it's off the both don't. The picture shows the wiring involved. The outlet ...
1 vote
0 answers
55 views

How do I wire two 3-way switches when only a single 14/3 cable is going into each box?

I'm trying to switch out my 2 Insteon 3-way smart switches (Insteon 2477S) with a pair of 3-way dimmer switches. The 2 insteon switches were working fine, and are wired up in each box using a single ...
0 votes
0 answers
52 views

Wiring up a switch with only one wire

So I only have one wire in my switch box and it’s going up to the light. I can only grab my power from the ceiling but I don’t want to fight inside of a plaster wall to get a wire back down. Is there ...
9 votes
2 answers
2k views

Why are my new switches operating in reverse?

I was replacing three old switches with two new switches a timer. The prior owner's install was as follows: White wires all bundled One black wire (hot) running across all three switches The ...
3 votes
1 answer
434 views

3 sets of wire in a switch box [closed]

I'm replacing a switch in my room, the old 2 way switch had all 3 blacks in the switch and the grounds bundled up and the whites bundled together I bought a 3 way switch I guess not knowing what I ...
-1 votes
1 answer
92 views

3-way switch has two separate circuit hot wires from the breaker?

I have an old 1921 home with a 3-way switch for the upstairs banister hallway. The switch locations are on either end of the staircase and it controls the track lighting on the 2nd floor. I wanted to ...
0 votes
1 answer
56 views

My Room Light Switch doesn't seem to be grounded, while everything else is

I pulled the cover off of my light switches in my room, and found that the ground screw had no wire connected to it, the switch is in a metal box, and the wires are fed through the holes in the back. ...
3 votes
3 answers
385 views

How can I reorder switches in a 4 switch box?

I have a 4 switch box that I would like to change the order of. Imagine left to right the switches are in order: ABCD. I'd like them in order: DABC. When I've worked on a box with multiple switches ...
1 vote
4 answers
4k views

Motion sensor with bypass switch?

I wish to have a motion sensor on the lights in my garage, but I also want to have an override switch that works normally, and does not require a specific pattern to toggle the override in the sensor. ...
1 vote
2 answers
88 views

Three way switches - 2 wire - one side dependent on the other

I am replacing old switches & outlets in my 1970's home and encountered an issue with this 3 way switch. One side only works if the other is on. Both sides are only 2 wire with the white wire ...
1 vote
1 answer
59 views

Best way to hog out material for a doorway jamb switch’s electrical box?

I keep splitting the thin wood of the jamb itself when trying to use a chisel because when the needed hole size is correctly cut, the remaining amount of material is like razor thin (<1/4”). I have ...
4 votes
3 answers
219 views

Trouble in rewiring a 4-way after removing transformer that was connected to the middle box

Previously, I had a low-voltage single light fixture controlled by three switches. However, I recently replaced it with a regular fixture, eliminating the need for the transformer. Unfortunately, I ...
-1 votes
1 answer
104 views

Where should I install a wireless l switch receiver in a room with 7 recessed lights?

I have two 3-way light switches that control seven recessed lights in a room. I would like to add a wireless switch for them. Where do I need to put the receiver? I can access the wiring, but do I ...
2 votes
1 answer
333 views

Ground wire not connected to light switch

I'm replacing my 3 way light switch and noticed that there is no ground screw on the existing light switch and the bare ground wire is just tucked in the back of the plastic switch box. My new switch ...
4 votes
5 answers
2k views

Which switch in a 3-gang box should control the stairway lights?

At the bottom of my (unfinished) basement stairs, there are three switches in a three-gang box: one is a 3-way switch controlling the stairway lights, the other two are for different lighting zones in ...
-1 votes
1 answer
82 views

Why are there 4 cables coming into 2 switches, and then a jumper installed?

I am trying to install toggle style light switches instead of the rocker style that is here. It's for my bathroom, one light and the fan. The fan doesn't work right now and there are too many ...
13 votes
2 answers
139k views

Is it ok to wire light switches and lights with 12/2 cable?

It sounds like light switches and lights are usually wired with 14/2 cable. Is it okay to use 12/2 cable instead? Would I need special switches?
0 votes
1 answer
255 views

What is a traveler wire and how does it work?

I have been doing little bits of electrical lately, mostly wiring up basic single pole switches and outlets and I have been trying to learn more as I go. When looking at some diagrams for 3 way ...
0 votes
3 answers
50 views

Single pole switch at the end of a three way switch

I have a pair of 3-way switches in the basement, the switch furthest from the power source is by a walkout door. There is a light outside the door which uses a switch that connects to the 3-way ...
0 votes
2 answers
69 views

New switch ports to be correctly identified as Common (Red) and Neutral

Need to identify the correct porst for Common (Red) and Neutral (Black) on new switch backplane. I have indicated as "1" where the Common --Red wire should connect. The word Loop is between ...
0 votes
1 answer
64 views

Will a continuity tester or ohm test work to test if a 3-way dimmer switch is faulty?

I bought a Lutron TGCL-153PH-WH 3-way dimmer switch, and I have been having trouble with my three-way wiring. I decided to see if my 3-way switch was faulty, and I conducted an ohm test with my multi-...
0 votes
1 answer
73 views

Pigtailed switch from outlet

I'm in the process of wiring an outlet and a switch to control a light fixture. I wanted to check if my wiring is correct before proceeding further. Here's the setup: I have a 14/2 wire entering a 2-...
0 votes
1 answer
32 views

Can I add a switch to a multi-outlet GFCI circuit to effectively segregate some outlets?

I have 8 outlets on a single 20A GFCI circuit. 5 outlets in the garage and 3 outlets outside to the patio. First outlet from the box is 20A GFCI. 2nd outlet in the series branches to power the 3 on ...
2 votes
1 answer
119 views

Help Understanding Wiring of Lutron Maestro Light Fan Combo Transition

In my master bedroom I currently have a Lutron Maestro switch that controls both my ceiling fan and lights. The switch can dim the lights and alter the speed of the fan. I would like to switch this ...
1 vote
1 answer
576 views

Replace double light switch

You will see the old light switch has two common ports and 2 l1 and 2 l2. (Common wires removed on first pic). New light switch has com1, com2, l11, l12, l21, l22 - where do the wires go in the new ...
1 vote
1 answer
48 views

Need help adding a new switch to 3 way switch

I would like to add a single pole switch to a separate light fixture. I want to add the new switch to what would be the first switch in the picture I attached. This switch has the power source coming ...
0 votes
1 answer
34 views

One Switch (3-way) for Two Fixtures

I've got a weird situation on my house. My kitchen has lighting controlled by two switches at opposing ends of the kitchen. Both ends also have ceiling fans with lamps in them. At one end of the ...
0 votes
0 answers
40 views

Switch old light switch to new dimmer

I've moved into a older US home I'm trying to update a light switch to a dimmer. The wires are clothed but in good condition. There are two wires going to the top side screw and one on the bottom. I ...
1 vote
0 answers
37 views

use a 2-way-2-gang switch to control a dual-speed fan motor

I want to use a 2-way-2-gang switch to control a dual-speed fan motor. The switch has six poles on the back: L11, L1, L12, L21, L2 & L22. The motor has two terminals: High Speed and Low Speed. The ...
1 vote
3 answers
120 views

How to use one SPST switch and two SPDT switches in 3-way to control single load per NEC

A similar but improperly-worded question was asked previously. I am trying to understand the options for how to do this and not whether the specific plan I've outlined is permissible. I want to power ...
0 votes
1 answer
48 views

Does a piggyback float switch override the default switch?

What is the real purpose of a "piggyback" float switch? Obviously it can be used to replace an existing broken switch, but is it also used as a secondary switch? The internet does not have ...
0 votes
0 answers
43 views

Are microwave switches universally compatible?

I want to know if it's possible to other manufacturer's parts in place of LG. Is there someone I can contact to see if they are interchangeable?
0 votes
2 answers
88 views

Is it better to use two-wire or three-wire cable for a bath fan/light unit? [closed]

I’m running Romex cable in a bare (framed only) bathroom. End result should be 2 vanity lights on one switch, and then above shower light (recessed LED water-rated) and a separate vent/fan (Delta ...
0 votes
2 answers
101 views

Box fill calculations for a light switch in a Carlon old work box

I thought I got the box fill calculations right but there must be an issue, still. Because, assuming my calculations are correct, no single box on the market would be large enough for a simple light ...
4 votes
1 answer
327 views

Replacing a three-way switch wiring with smart switch(es), is it possible?

I have a 3-way setup and I'd love to make it smart, but I'm not sure how. Here's my setup: Box #1: 2 Wire Cable (Black, White) + 3 Wire Cable (Black, White, Red) Box #2: 3 Wire Cable (Black, White, ...
0 votes
1 answer
61 views

Two 3 way switches with only one 3-wire cable

I have two 3-way switches that I wanted to install. I unfortunately only ran one /3 cable between the switches. I have the source at one box, 2 lights at the other box, and one /3 wire between them. ...
2 votes
1 answer
111 views

What might cause frayed insulation inside a light switch box?

I opened a 2-gang light switch-box on my wall (to determine if there happened to be a neutral inside), and I found this fraying/damage to the insulation on the wire pictured below. I couldn't tell for ...
-1 votes
1 answer
30 views

Adding a dimmer switch [closed]

I bought a dimmer switch that is digital and it is a remote switch. Come to find out you need a master switch to run two dimmer switches to one light. The only way to get the master switch is to buy ...
0 votes
2 answers
97 views

Can I provide a neutral wire from another point on the same circuit?

My house is from the 1950's and I've been replacing some light switches with smart ones that require a neutral wire. In my bathroom, the wiring appears to be a switch loop like the image below. There'...
2 votes
1 answer
162 views

How can I hard wire a contactor switch after breaking our float switch?

We have a pump that turns on with a float switch that is broken and was removed from the contactor switch - so I can't see how it was wired in. The good news is, we have a circuit breaker dedicated to ...
1 vote
0 answers
28 views

Is this light-switch wiring safe and up to code? Kasa wifi switch next to 3-way rocker switch

My house was built in 1979. Today I replaced these 2 lights switches. The left switch was a simple switch. The right one was a 3-way switch (i.e. there is another switch that also controls the same ...

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