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18 votes
Accepted

Why are my new switches operating in reverse?

This screen shot is from the Lowe's link you provided: Take a look at your switch. I'm willing to bet that it says "TOP" at the bottom as you've installed it. Unscrew the switch from the ...
FreeMan's user avatar
  • 47.1k
12 votes

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

No rules. I wish there were. The closest thing I have in my house is 3 switches by the front door. First (closest to the door) switches the outside light. Middle is a 3-way switch with upstairs. Last -...
manassehkatz-Moving 2 Codidact's user avatar
11 votes

Why are my new switches operating in reverse?

TL;DR Turn the switches around With traditional toggle switches, a regular (not 3-way) switch will have embossed "ON" and "OFF" which tells you how to orient the switch. However, a ...
manassehkatz-Moving 2 Codidact's user avatar
7 votes

3 sets of wire in a switch box

identify where each of the three blacks goes. wire-nut the black from the breaker to the black going to the outlets, along with a pigtail connected to the switch common (usually at the end of the ...
MadMonty's user avatar
  • 749
6 votes

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

Based on your diagram, you just have to hook up the neutrals (and grounds, if you haven't already gotten it) Assuming your diagram is correct, it looks like you have all the hot wires taken care of, ...
ThreePhaseEel's user avatar
6 votes

How can I reorder switches in a 4 switch box?

Are there any safety concerns with this wiring? Why might it have been done like this? You have a Multi-Wire Branch Circuit (MWBC). It allows you to run one /3 cable (with one neutral (white), two ...
FreeMan's user avatar
  • 47.1k
5 votes

Ground wire not connected to light switch

Grounding means on switches have only been required by electrical codes fairly recently, so there are untold millions of ungrounded switches still in service. By all means, attach the equipment ground ...
kreemoweet's user avatar
  • 3,454
4 votes
Accepted

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

Continuity testing works with a simple switch. That's a switch with no: WiFi Timer Dimmer Other "smart" functions Why? Because a simple switch simply makes or breaks an electrical ...
manassehkatz-Moving 2 Codidact's user avatar
3 votes

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

Not determined by code... My personnel recommendation if you really don't know where to put it... put the unconnected switches in the box, go to walk up the stairs and reach for the switch that makes ...
Questor's user avatar
  • 692
3 votes

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

My preference would be to use the location closest to the stairs for the 3-way switch for the stairs. Whichever choice you make, affix a color coding label to the 3-gang plate under the switch for the ...
Jim Stewart's user avatar
  • 21.6k
2 votes

Single pole switch at the end of a three way switch

Smart Switches to the Rescue! A normal 3-way switch setup has: Two travelers - at any given time, one has power and the other doesn't. If the one with power (based on "switch 1") is ...
manassehkatz-Moving 2 Codidact's user avatar
2 votes

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

If both really are two-way switches, wiring one of them "backwards" can produce exactly this behavior. Check that hot and the two travellers are attached to the correct terminals on both ...
keshlam's user avatar
  • 28.7k
2 votes

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

Two separate issues: Metal Box A metal box can be grounded in one of two ways. If it is used with cables then the ground wire in the cable should be attached to a screw in the box. If it is used ...
manassehkatz-Moving 2 Codidact's user avatar
2 votes

How can I reorder switches in a 4 switch box?

Your panel looks full! If the only outlets on both breakers are in the dining room, take the opportunity of working inside this box to free up space by combining underused circuits. You don't need ...
jay613's user avatar
  • 37.1k
2 votes
Accepted

What should I do with old switch wires?

No you cannot just put a nut on a wire and shove it back into the wall. Why? What happens if you accidentally knock that nut off while installing the new box and don't notice? That's why. Plus code ...
FreeMan's user avatar
  • 47.1k
1 vote
Accepted

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

It seems it isn't possible with a dumb switch of any kind. However, I found that the "Plus" and "Pro" series of the Shelly switches can use mJS scripting to create any mode of ...
Jimbo1987's user avatar
1 vote

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

Vague, but specific question, so I'll give a vague, but specific spit-ball answer: IF the power comes into one of the 3-way switches (and isn't supplied at one of the lights)... Install a new DPDT ...
FreeMan's user avatar
  • 47.1k
1 vote

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

A 3-way switch circuit with control from either switch (what is normally meant by "a 3-way switch circuit") requires 3-way switches (with 3 terminals and 3 wires connected) at both ends. ...
Ecnerwal's user avatar
  • 211k
1 vote

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

Noone says you're stuck with a single plate. Put the stairwell switch on its own plate and put the ceiling lights on a 2 gang plate. If you want to make it fancy, use a motion sensor on the stairwell'...
Criggie's user avatar
  • 10.5k
1 vote

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

My electrician said that the usual guideline is that the left switch = more important so he will default to that; but also that he will put switches the way I ask him to if I have special wishes. So, ...
Zizy Archer's user avatar
1 vote

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

The key step was getting power from box 3 to box 2. I ended up taking power from the other switch in box 3, wiring it as a common wire, and pigtailed it to the common screw on the 3-way switch. Then, ...
Bill Chen's user avatar
1 vote

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

Edit: I'm fairly certain I see what's up now. Just saw the photos you have box 2 and 3. I will draw out connections for you. Box 2: the single pole switch on right was the missing information. I ...
Keith's user avatar
  • 1,065
1 vote

Motion sensor with bypass switch?

Simplest way is to use a three pole - two way switch combined with a two pole single way switch. That way the two way switch controls both the single way switch and the sensors. Switch it one way for ...
Kirk's user avatar
  • 11
1 vote

Single pole switch at the end of a three way switch

The outside light is most likely powered by the switch leg of the 3-way. Some thoughts: if there is constant power in the 3-way box, then use that to power the single pole. (there must be a neutral ...
RG Hughes's user avatar
  • 609
1 vote

Single pole switch at the end of a three way switch

It may be possible, depending on what wires are available in the outside light switch, but it will not work the way you are expecting or hoping. If you have both travelers in the outside light switch ...
BaddDadd's user avatar
  • 249

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