Questions tagged [smart-switch]

A smart switch includes electronic circuitry for remote control (beyond simple three-way switch wiring), smartphone or internet-based control, advanced timing capability or other features not found in traditional switches. Smart switches may require more (e.g., neutral) or fewer (e.g., signal 3-way with one wire instead of two) wires than traditional switches.

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What could be causing changes to a smart bulb to affect a regular bulb on the same circuit?

We have a Lutron Caseta dimmer switch which controls a set of four downlights. I tried replacing the bulbs with Hue downlights (knowing full well that these wouldn't play well with the dimmer, except ...
jogloran's user avatar
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14 votes
1 answer
72k views

How can I install this programmable switch where a neutral is not present?

I'm trying install this programmable switch but the instructions do not match reality. The instructions refer to the existence of a black (load) cable and a white (neutral) cable supposedly coming out ...
amh's user avatar
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10 votes
3 answers
11k views

Why are there three sets of wires for two switches, and how to wire up the neutral?

Background I have two light switches that I am planning on replacing with smart switches. As the diagram below shows, there are three "collections" of wires coming out of the wall, where ...
dwally89's user avatar
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9 votes
5 answers
2k views

Can a 14 AWG pigtail be used with a smart switch with a 20 amp breaker?

There are several previous questions that have been asked on this topic but they're all related to receptacles. I'm seeing that it is against code to use 14 AWG on a 20 amp circuit but when it comes ...
jpQuick's user avatar
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8 votes
3 answers
4k views

Can a 12 gauge wire be clamped onto a light switch using the side screw?

I was simply replacing a existing dimmer switch for my kitchen lights with a newly bought Feit electric smart 3 way dimmer switch. After studying, I have located where the dimmer switch should be ...
Sidney Yin's user avatar
7 votes
3 answers
2k views

How can I install an on/off indicator for a lighting circuit?

We installed smart lights that work with Alexa/Google Home. The problem is that when the lights are off, we don't know if they are off because the (3-way) switch is off or because we voiced them off. ...
Wynne's user avatar
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7 votes
4 answers
7k views

Odd wiring setup in light switch

Hoping for some help after trying to get this setup to work. I’ve purchased a smart switch that requires two load wires, one neutral wire, and one ground wire. When I took out my existing light ...
Anil Vaitla's user avatar
6 votes
3 answers
4k views

When installing a smart switch, can I pigtail off of the neutral from the existent outlet in the same box on the same circuit?

I have a box with a double receptacle and a switch where the switch powers an exterior outlet on the other side of the wall. In the photos below, the orange is the switched hot for that outlet. All ...
Bryan's user avatar
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6 votes
1 answer
1k views

How do I install a smart switch with this wiring I don't understand?

I have lots of experience with wiring switches and lights/fans, when the existing wiring it's the standard hot, neutral, ground to the device and 2x neutral(tied together), 2x hot(line and load), and ...
Spencer Tharp's user avatar
6 votes
1 answer
858 views

Can I connect the neutral wire ends via a single switch terminal (without a pigtail)?

I installed a smart dimmer switch that requires a neutral wire. It was in the junction box with the two ends wire-capped together. My switch didn't come with pigtail wires and I didn't have any extra ...
HuntedC's user avatar
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5 votes
3 answers
3k views

Why does a Smart Switch on/off have lower wattage for LEDs vs incandescent

Why do smart switches have 2 different wattages based on LED and Incandescent bulbs? I have found information regarding Dimmable light switches which makes sense because of the dimmer control can ...
Don 's user avatar
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5 votes
2 answers
3k views

How to turn on another lamp across room with lightswitch that only controls a one outlet?

In my office I have a light switch that only controls the bottom plug on one outlet. I have a lamp plugged into it, but I'd like to be able to have another lamp plugged into it also. Right now that ...
Chris Barr's user avatar
5 votes
1 answer
642 views

How Can I Install 3 Way Smart Switches That Require Neutral

I'm trying to replace 2 sets of three way switches with smart switches. One end of each set requires neutral, and unfortunately there doesn't seem to be a straight forward way to accomplish that with ...
kfoley's user avatar
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5 votes
1 answer
337 views

Trying to install smart switches - came across something that looks wrong

I am putting in some wemo dimmers to replace my existing dimmers in a three gang box, and came across this wiring: I marked areas of concern with red circles. It seems that the two dimmers are ...
Brian's user avatar
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5 votes
1 answer
117 views

So just how hard is it to pull new wiring into a typical switch loop?

I'd like to install more home automation. Unfortunately at least half my house is wired with old switch loops which have no neutral in the box. I also have ceiling fans with lights on switch-looped ...
keshlam's user avatar
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5 votes
2 answers
9k views

Wiring Leviton Smart 3-way Switch when Load Line Goes to the Fixture

I'm converting my home to use all Leviton smart dimmers (DH6HD-1BZ) and LED lights. All has gone well so far with neutral being accessible from most switches. However I've come across an old-school 3-...
okin33's user avatar
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5 votes
4 answers
3k views

Trying to install 2 smart switches but neutral wires in box are not connected

I'm trying to install 2 smart wifi switches to replace 2 dumb switches in a box. 1 switch powers a dining room light. The other switch powers two kitchen lights that turn on/off together. As ...
Bob Sacamano's user avatar
4 votes
3 answers
1k views

Rewiring a switch to bring in neutral

My master bedroom has a single light switch for the overhead fixture; however, it was built in the 50's and has end-line "power at the light" wiring like so: Image borrowed from this ...
Doktor J's user avatar
  • 505
4 votes
3 answers
2k views

Can I wire a smart switch with a neutral and no load?

I have a wall switch that currently controls a wall outlet. I don't have or want a light plugged into that outlet. I'm comfortable reconfiguring the circuit so that the outlet is powered directly and ...
qmega's user avatar
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4 votes
2 answers
1k views

Alternatives to running a single Neutral wire?

I have a switch box with two switches. I'd like to replace one of them - a single-way switch controlling a light in the hallway (which is controlled by no other switches) - with a smart switch. The ...
user112697's user avatar
4 votes
6 answers
2k views

How can I wire one switch to control two circuits (different breakers)

Okay, so it's like this: my workshop has surface mount metal electrical boxes linked with metal conduit throughout. The switches (a single 2-gang box that housed two single pole switches side by side) ...
NerdyDeeds's user avatar
4 votes
2 answers
276 views

How to connect ground from smart switch to the metal junction box

how do I connect the ground wires from my Kasa smart switches to the metal junction box? As shown in photos, the four screws at the back of the j box already have copper wires under. Can I just add a ...
Raffi's user avatar
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4 votes
1 answer
2k views

Can I connect two neutral wires from a Single pole switch and a 3 way switch to a set of neutral wires as shown in the picture?

I am replacing these two switches with smart switches (Brand:Kasa). One of the smart switch is Single pole another is a 3-way switch. Both switches will need their neutral wires to be connected. My ...
Nick's user avatar
  • 43
4 votes
1 answer
523 views

Replacing a combination switch to two separate switches (1. Simple light switch and 1 smart switch)

I have an outdoor light that I would like to control with a smart switch and a hallway light that can be a simple switch. Previously, the two were controlled by a non-smart combination switch; I would ...
jcruzer's user avatar
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4 votes
2 answers
5k views

LED Can Lights Click When Turned on/off

I have these LED can lights all across the house. On a few of them I occasionally hear a single click sound and I'm so curious to find out why it happens and if it's a safety issue. I caught it on ...
Jonny's user avatar
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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, ...
Francis Forget's user avatar
3 votes
2 answers
383 views

How to Fix my DIY Smart Switch Install

I've been installing smart switches and mostly seems like working fine. This one location though, seemed okay at first but after a power outage the breaker tripped unless I removed the right switch (...
pjeffe001's user avatar
3 votes
3 answers
2k views

Adding a smart switch to a box originally containing two single-pole switches

I currently have two single-pole switches in one box, with the first/upper controlling an interior light and the second/lower controlling an exterior light. I want to replace the second/lower with a ...
Max's user avatar
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3 votes
2 answers
1k views

How do I replace this switch if the black wire is looped around the screw?

Behind a 2 gang wall plate, there are 2 single pole switches. I am trying to swap the left one out with a Kasa smart wi-fi light switch. The problem is, the black wire that connects to the bottom ...
dank's user avatar
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3 votes
2 answers
941 views

Should my smart switch be connected to the neutral wire from another cable?

I installed a Leviton smart switch in a 3-way circuit and the corresponding coordinating switch in the picture (right switch). The lights function as they should using both switches. However, I ...
user1259832's user avatar
3 votes
2 answers
38k views

Do metal outlet boxes act as grounds?

Here’s a photo of the inside of a switch I’m replacing. As you can see it has no ground wire, plus it’s got a blue wire instead of the normal black. All the new 3 prong outlets I installed in this ...
Tinycanoe's user avatar
3 votes
2 answers
1k views

How to deal with large 4-gang switch boxes and the need to wire together numerous wires (>4)?

I'm looking to upgrade my light switches to smart switches, which I've been doing mostly successfully around my house. However there are a number of large 4-gang switch boxes and I'm not sure what to ...
Jason's user avatar
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3 votes
2 answers
2k views

Wifi light switch needs neutral wire. Why? AND Can that wire be a skinny one?

What does the neutral wire do on a light switch that responds to wifi? My suspicion is that when the switch is in the off position, the electronics in the switch need to still be powered, so the ...
Gyrobob's user avatar
  • 31
3 votes
3 answers
1k views

Wiring from a toggle switch to Kasa smart switch

I'm trying to switch out an existing one way toggle switch for the Kasa HS200 smart switch. The left switch is the porch light I'm switching out. The right switch is the indoor foyer light. When I ...
Kevin's user avatar
  • 33
3 votes
2 answers
144 views

Office light Switch Wiring

In my office the light switch box has 3 sets of 3 wires, 3 black, 3 white and 3 copper. All 3 white are connected/tied together as well as all 3 copper wires. The 3 black wires all are connected to ...
Clark's user avatar
  • 33
3 votes
2 answers
6k views

Kasa “Smart” Switch does not turn off the light

My house has older wiring and a lot of stuff is rigged in a weird way. When I installed the Kasa switch, I was careful to only connect black to black and white/neutral to neutral and ground to ground ...
dq72's user avatar
  • 31
3 votes
2 answers
561 views

Wiring a switch and a dimmer

I have a box with a switch and a dimmer side by side. Last year I replaced them with smart switch/dimmer and had no problem until the dimmer stopped working. I am replacing the dimmer, but foolishly ...
iayork's user avatar
  • 163
3 votes
1 answer
447 views

Can I steal a neutral from another fixture on the same circuit?

I have a gang of 4 switch box, 3 switches are on the same circuit. There is no neutral or ground and it is knob and tube wiring, so I don't want to fix this (from what I've seen, the rubber/cloth ...
Adrian's user avatar
  • 253
3 votes
1 answer
1k views

Smart switch - Confused about current wiring

I want to replace my current light switch with a TP Link HS220 (smart switch with dimmer), but I’m confused about current wiring. I believe top wires go to the light and bottom is the source. Am I ...
Simon Arsenault's user avatar
3 votes
1 answer
669 views

Why is a neutral wire needed for a smart switch, and how can I provide one?

I plan to install a Smart Switch to control an outside outlet. The existing electrical box is in my detached garage and it does not have a neutral wire. The box currently only controls a single GFCI ...
TJ Boyle's user avatar
3 votes
3 answers
16k views

Two black wires into same terminal on light switch

I've replaced a number of switches in my house following the Lutron instructions, but the wiring below is not covered. My question is: on my new Lutron switch (one is already visible in the picture), ...
user98434's user avatar
3 votes
1 answer
380 views

Replacing two-gang manual switch to smart switch (AU)

I live in Australia and am trying replace a two-gang manual switch with a smart switch. I found the neutral (black wire with red circle) and when connecting the red wire (next to it) to the Live In of ...
Ruben's user avatar
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3 votes
3 answers
4k views

Installing smart switches in 2-gang box with switch loop

We have two dimmer switches in a finished basement room. Switch 1 controls wall lights, and Switch 2 controls overhead lights. We are hoping to replace them with smart switches that require a neutral....
Shaun Gallagher's user avatar
3 votes
1 answer
6k views

How to wire a 3-way dimmer switch in box with three cables

I was thinking I would replace one of our dumb switches with an Eve smart switch. I opened it up to make sure it had a neutral wire, but it was wired so poorly that as I pulled on the old switch, ...
Doug's user avatar
  • 367
3 votes
1 answer
1k views

Installing Kasa smart dimmer 3 way with only 4 wires?

I have some lights controllable by two toggle switches on opposite sides of the room. Im located in the US in an older house, Im trying to install a Kasa Smart Dimmable 3-way Switch (KS230). However ...
Blueman101's user avatar
3 votes
1 answer
459 views

add neutral wire to existing "bundle" for smart switch - need help understanding box

Attached is a markup picture to help identify wiring. This is in the USA. There are wires that come in from the bottom left of the box and from the top right of the box. I'm just a DIYer, and I'm ...
TheCleaner's user avatar
3 votes
1 answer
187 views

Two 3-way switches wiring to control two lights

I did some searches but cannot find the answer(s). I have two 3-way switches that control two lights. I am trying to convert them to smart switches and trying to figure out which kind to get. I opened ...
H.Hung's user avatar
  • 51
3 votes
1 answer
585 views

How do I wire my new smart switch for bathroom light & fan control?

I've never installed a light switch before and I've done a ton of research but this part stumps me. I have a two-gang switch in my bathroom. The left switch turns on the light and fan. The right ...
Nick's user avatar
  • 31
3 votes
1 answer
172 views

Need Help Using a TP-Link HS210 Kit to Replace GE/Jasco Bluetooth Switch and Add-On

My house has an old GE/Jasco Bluetooth switch setup in a 3-way configuration. That uses 2 different kinds of switches. One is referred to as the primary and one is called an add-on. They have ...
JohnZ's user avatar
  • 31
3 votes
3 answers
1k views

Why don't my lights dim after replacing a Lutron dimmer with a smart switch?

coming to the experts because I can't figure out what's going on and why. Goal Install a smart 3-way dimmer switch that allows 8 recessed LED lights to turn on/off and dim correctly. Background In my ...
Tim Dee's user avatar
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