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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2answers
21 views

Relay in Thermostat: current capability \ rating

When designing a thermostat, a relay must swtich a 24V AC signal to call for cooling / heat / fan etc. Industry standard thermostat wire color code used for most systems: White. The white wire ...
3
votes
1answer
90 views

Could a neutral wire be black?

I have these two switches which the left one is for the bathroom fan and the right one for the light. Everything already works. Now I want to add a minuter switch to the fan and the minuter have all ...
2
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3answers
52 views

Adding an outlet to the dishwasher/disposer circuit

I have switched garbage disposal, like many people do. The switch is on a wall w/o any outlets. I'd like to convert the switch to a switch/outlet combo. I read that you shouldn't add an outlet to ...
2
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2answers
177 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 ...
2
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2answers
36 views

Trying to replace a garage light switch with old wiring

Trying to replace a light switch in the garage with a new one but the wiring doesn’t match. Old switch has white (currently matched to red/black) and black (currently matched to black) coming out of ...
2
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2answers
52 views

light switch controlling wrong light

I have a light in the bed room controlled by its own switch and one in the closet with its own switch. when turning lights on each switch controls only the light it was intended to control. However ...
2
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1answer
43 views

Double light switch issue

We have just wired a new 2 way, 2 gang, switch plate, which works, but for one side the 'on' position is up, and for the other it's down, which looks odd and is impractical. Is this a problem with the ...
4
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2answers
130 views

How can I uninstall this old school light switch from the wall?

I have a few of these old school light switches in my current accommodation: I now need to replace one because it is not working anymore so I'm trying to uninstall it from the wall. Alas, I'm not ...
2
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1answer
38 views

Wiring ceiling light from switch that controls outlet [duplicate]

I am trying to add a ceiling light to a switch that currently controls a floor outlet (top plug only). Coming into the light switch are a ground, a hot and a switched hot. I have pulled an ...
1
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0answers
38 views

Light flickers once when fan is turned on

Greetings beloved comrades, I have several lighted ceiling fans of the same model wired with separate, non-dimming, wall switches for the fan and light. The lights inside may be LEDs, but I haven't ...
1
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1answer
26 views

Replacing fan/light switch

Trying to replace an old switch that controls a ceiling fan with light. The original switch had a knob that you would push in to turn the light on or off and use the knob to dim the light. I ...
1
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0answers
36 views

Connecting power to switch

3-way switchI have a 2 gang box in wall. There were two 3-way switches installed. Removed one of those switches but kept the wires intact and capped off properly and power runs thru them to keep ...
4
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6answers
12k views

How do 5 light switches in 2 boxes with all black wires work?

I'm attempting to replace some switches and have opened up two of the boxes in my bathroom. I've found that for all the switches (5 total switches in 2 different boxes) they only use black wires. ...
6
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3answers
1k views

How should I eliminate an unused switch in a two gang box?

Florida, USA We bought a house with five ceiling fans, each with a light fixture installed. Each fan is controlled by a pair of wall switches in a two-gang box, one for the fan motor and one for the ...
1
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1answer
40 views

Wiring help needed with 2 separate lights and switches

I have a single switch in my garage for the light outside my garage. I have a single switch at my front door for my porch. I want to have it so either switch will turn on both the garage, and porch ...
0
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2answers
78 views

How do I connect touch panel 3 gang switch?

I’m confusing about line2 from wall has 4 wires instead of 3? Line 1 and Line3 has only 3 wires. Line 2 is not 3-ways switch. What I know is only 3-way switch has 4 wires. My question is how do I ...
0
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0answers
50 views

Light switch replication

I appear to have a not so common request. I have two light switches which are located 1m (3ft) apart and control two ceiling lights located 2m (6ft) apart. There must have been some idea behind it, ...
3
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2answers
104 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 ...
13
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6answers
9k views

Identifying Wires behind Light Switch

I am trying to upgrade my rocker switches to Smart Switches and ran into a problem identifying wires behind the old switches. It seems that the old switch is connected with a ground and 2 white ...
0
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1answer
138 views

I need a wireless gadget that may not exist. Pic and description attached

Between the laundry in the basement, the kitchen (sink and dishwasher) and a full bath on the first floor, and a full bath on the 2nd floor, sometimes taking a shower can be interrupted with the cold/...
1
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2answers
42 views

Light switch with 3 sets of wires (not 3 way)

I'm trying to replace a couple of old switches with new dimmer switches that have the wifi capability. I understand electronics fairly well and have done basic electrical work around the house before. ...
0
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0answers
39 views

Why was one of the light switches wired differently from other location?

Last night I installed a master dimmer and a companion dimmer in the dining room. Upon removing the wall plate to one of the two switches, I discovered that a black wire was attached to the black ...
0
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1answer
32 views

Dual light switch changing to dual smart switch

I currently have 2 switches. Each switch has a black wire and a white attached to it. I’m trying to install a dual smart switch, which requires 4 black wires and a neutral wire. Confused on how to ...
0
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1answer
29 views

Can I fix heat regulator (burner switch) of electric range?

So the burners stay on no matter what setting - low or high. I opened and found the switches (heat regulator) were the problem. The metal contact of the green board is broken because it's too thin. ...
1
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2answers
48 views

Identifying wires in an Intermatic pool pump timer

I’m trying to positively identify what is on each of the four terminals in a pool pump’s timer box (before replacing it with a z-wave smart switch): The trick is that both line- and load-side wires ...
1
vote
1answer
50 views

14/2 wire 2 way switch adding 14/3 wire to make it a 3 way

I want to turn a 2 way switch into 3 way with 14/3 wire. I am assuming wire nut the white wires, and put the other wires on the switches. I bought 2 3 way switches as well.
0
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3answers
46 views

Light switch no power when on

I have this bathroom light switch, when I turned it on, I tested power between red and black wire, there is no power If I turned it off, there is power red/black line How does it work exactly? I don’...
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0answers
60 views

Need Help I'm moving a light switch from one wall to the other, but I ran into a problem

I recently moved into a house and I'm converting the attached Garage into a workshop. The thing is the light switch was on the other side of the Garage by the Garage door, I decided to move the switch ...
2
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3answers
66 views

Ceiling light wiring problems, please advise

I was changing my light fittings as they were old and yellow. My living room has 2 lights on the ceiling at opposite ends Controlled by a single on off switch. The first fitting was normal, red/live ...
0
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0answers
25 views

(Need help)- Can I wire a ceiling fan/light fixture from an existing 3-way switched outlet?

Link to Imgur for pictures with reference drawings: https://imgur.com/a/ETfCvZl As title says, I'm trying to wire a new ceiling fan/light fixure. I currently have a 3 way switch that controls one ...
3
votes
2answers
70 views

Is this outlet wired to a switch correctly?

I have been upgrading to grounded outlets in my 1950s house and I just want to make sure that this particular outlet was wired appropriately by the previous homeowner. This outlet is controlled by a ...
0
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1answer
43 views

when I turn off the breaker, light goes out but I still see some voltage with my voltage checker

there are two switches in the box. One goes to an inside light the other goes to an outside light. i turn off the breaker and both lights go out. when I check with my voltage checker, I don't see ...
5
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2answers
720 views

Shared ground on bathroom light, fan, heater combo

I plan on replacing the exhaust fan in my bathroom and want to replace it with a light/heater/fan combo. In doing so, I want to be able to power both the vanity light and the fan light with a single ...
4
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2answers
675 views

Handybox Extension

Can you stack a handybox with an extension outside of the drywall? This puts the total box size at just shy for 4". I know handyboxes can be used with conduit, but can they be double-stacked in a ...
0
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1answer
34 views

3-Toggle to 2-Toggle

I’d like to replace the three toggle switch with a two toggle switch. The leftmost switch (as shown in the below photo) does not control anything in my bathroom. I’d like to replace this leftmost ...
-1
votes
1answer
36 views

Gfi outlet trying to install light switch and light

While trying to install light switch and light from an existing gfi outlet the circuit faults whenever switch is turned on also the light comes on in the off position 12 gauge 3 wire coming to ...
1
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2answers
95 views

Why three wires?

I have a carport light that takes two switches to operate. An inside switch essentially sends power to an outside switch. In other words, when the inside switch is in the "on" position, the outside ...
0
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0answers
49 views

Reed switch not maintaining state

I have a reed switch that connects to a relay to control lights in a closet. switch is normally closed. when the closet door is open, it turns on the light, when I close the door it TURNS OFF the ...
5
votes
5answers
2k views

Sump pump automated battery backup

I have 1/3 horsepower sump pump currently plugged into my home's 120 volt outlet. I have a 105 amp hour 12-volt battery and a 1200 watt pure sine inverter ready to go when the power goes out. The ...
0
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2answers
56 views

Wiring a bathroom exhaust fan light and Outlet on one switch

I'm having a problem trying to replace my bathroom switch....there are 9 separate wires coming out from the wall...1 red, 4 white, 4 black...there is an exhaust fan and then there is a light above the ...
1
vote
1answer
32 views

Well pump only works with on/off switch not control box

My well pump is setup with an on/off switch that works fine as well as a control box that should be turning it on when activated. Now it just makes a clicking sound and nothing happens. I am ...
0
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0answers
28 views

goodman limit switch problem

I have a 2013 goodman 3T gas pack. It is being intermittent and telling me there is a limit switch problem (4 blinks). I try to catch it when it goes off which is about every other day, but by the ...
0
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1answer
59 views

Trying to wire switch outlet combo to existing two outlet. But the outlets each have 3 wires

I have 2 outlets, I want to replace with switch outlet combo (outlet always hot). But looking online, I keep seeing everything has only one white neutral, but in my case, both outlets have a black ...
0
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1answer
34 views

Furnace Troubleshooting- Inconsistent Error Codes

My American Standard furnace ("Standard" Model, year 2003, 12 or 13 SEER) gave an Error Code 2 when first turned on- "External lockout, retries or recycles exceeded." (4 fail to ignite cycles ...
2
votes
1answer
66 views

Why do I have multiple connections on a single common connection?

I'm in the process of trying to add a smart relays to my light switches across the house. In most cases I've managed fine and I understand how the circuit works, to me that is critical before I make ...
0
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2answers
37 views

3 way light switch with timer - flickering

I have a 3 way light switch which works fine with a regular light switch. That is, I can control on/off without issue from either switch. I moved one of the switches to a timer, the Intermatic ST01, ...
0
votes
1answer
87 views

Fried dimmer turns lights on/off but new dimmer won't

I had two black wires, one red wire and two white wires coming from the ceiling (I suspect there used to be a fan with a light). In the switch box, there was a black and a white wire (with a green ...
0
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0answers
33 views

Problem with electrical switch

I have a switch that’s supplied with electric but can’t find out what is it for How can I find out what is that switch for?
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1answer
57 views

Light switch sizzled

I had maintenance turn off my breaker and fix the pull tab on my ceiling fan. Then turned it back on... Few minutes later.... I turned on a light switch and it made a sizzling noice! Maintenance came ...
2
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1answer
56 views

How can I use a switch for outlets to control a new overhead light?

I am trying to rewire our bedroom so that a wall switch that turns on/off half of all receptacles in the room will instead control a ceiling light and leave the receptacles (both halves) always hot ...