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Wiring a double light switch

Some of the wires have become detached from my double dimmer light switch. (I have two light bulbs in the room). When I opened the casing I found two banks of three 2x3 points (for wires to be screwed in). Two red wires were coming from the wall. One of these was attached to the middle point below and one was loose. There was a short length of blue wire inside, attached to nothing! Another blue wire was attached between the left hand point above and the corresponding point below. I reattached the red wire to the middle point above, to match up the reds.
I got one of the bulbs to light. But one switch would turn it on and the other switch would turn it off!
Where do I go from here please??

Posted by Anonymous on

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Phil Marsden

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Electricity can kill!
Proceed with caution some of the wires (probably the red) may be live all the time. IF IN DOUBT CALL AN ELECTRICIAN!
First thing is to remove the fuse from or switch off the circuit breaker controlling this circuit and ensure all wires are dead using a circuit or neon tester.
Check the back of the switch terminals should be marked C (for Common), 1 and 2 for each switch. The red wire that was fixed would most likely have been in a C terminal, the other red wire that was free should go to the other C terminal.
The fixed blue wire may be in a 2 (or sometimes a 1) terminal, fix the other blue into the same numbered terminal of the other circuit.
IF IN DOUBT CALL AN ELECTRICIAN!
Electricity can kill!

Posted on Apr 07, 2017

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5 Related Answers

Anonymous

  • 38 Answers

SOURCE: 120 volt folorescent light sign with a photocell

Based on what you've written, it should be black to red, white to white, and green to green. If you still have trouble, post a picture so I can have a better look of this photo-cell.
Hope this helps,
Kermit

Posted on Aug 22, 2008

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farfield

Farley Redfield

  • 462 Answers

SOURCE: replacing blower motor in furnace w/Fasco brand #D727

Some one missed the wiring diagram. I believe its like this:
L1 = Line 1 = (Hot all are same thing)
Black Hi
Blue Med
Red LO
Now usually the black is for AC and connects to a normally Open (NO) contact on the blower relay.
The heater speed (either red or blue) go the the normally Closed (NC) on the blower relay and on one side of this wire or contact on the relay it goes to the heating blower thermostat on the furnace.
The remaining wire (blue or red) you tape off.
L1 also feeds the Run Capacitor on 1 side and the Brown wire feeds the opposite side

The white wire is Neutral and goes to the neutral on the main line.

If this helps you please rate me accordingly and good luck.








Posted on Mar 13, 2009

Anonymous

  • 44 Answers

SOURCE: Single Pole Dimmer Installation

I'm not sure if this is going to work in your case, but I'm pretty sure it will...

Green to ground (probably bare)
Black to black
White to the red that's not labeled 3-way
wire nut on the red labeled 3-way

That should fixya!

Posted on May 30, 2009

dennis bullard

  • 4090 Answers

SOURCE: I want to replace dimmer switch with standard switch

the two black wires spliced are Live wires ( same value as RED) the other single black is the return. The two twisted blacks from the wall go into ther active hole of the new switch and the single into the return. No third wire for earth is needed

Posted on Jul 27, 2009

jdthefixer

  • 746 Answers

SOURCE: Cannot turn off a pull-chain fixture

It sounds like you have accidentally by-passed the switch. The switch only needs one power leg to the pull-chain switch and the other 3 wires go on the other wire of the switch. The white wires get connected together as you have done.

Please turn off the power before you make a change.

Posted on Sep 20, 2009

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How to fit dimmer switch



The dimmer switch you select will depend on the type of bulbs you will be using. The 'original type ' of dimmer works with regular incandescent bulbs and halogen bulbs only. They cost around $15.00. Then there are dimmers for compact florescent (cfl) bulbs and LED lights that are dimmable, as well for regular light bulbs. These types of dimmers are more expensive, ranging in price form around $40.00 upwards.
Light Switches Dimmers

If you are replacing a single pole switch ( just one switch that operates lights) you'll need a single pole dimmer. If you are replacing a 3-way switch ( two switches that operate the same light) you'll need a 3-way dimmer.
Installing the dimmer is pretty straight forward. All dimmers come with installation instructions. Make sure you turn off the circuit breaker for the particular switch you are replacing.

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1 Answer

Switch doesn't work


Because the switches have electronics in them the ground wire may be very important to give it a full 120 volts to be able to run. Also double check your lighting, these dimmers are likely for incondescent lighting only (light bulbs). A compact fluorescent or some other lighting may blow the switches. If your lights are led they may not have sufficient resistance so that the dimmer knows that you have any lighting at all. Fluorescent lighting has to high a capacitive reactance and or inductive reactance. Halogen or other lights may cause troubles too. Check the directions on your switches to see if they were for incondescent only or for fluorescent only etc. Also modern bulbs don't seem to screw far enough into the sockets because of their fat necks that bottom too soon. You may have to turn off the power then put your finger inside to bend the bottom contact up enough to touch the bulbs.

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Armacost dimmer doesn't work


You must have strayed from the original wiring that was there. To test remove the dimmer and cross the wires to make sure the light turns on. Look carefully on the front of the dimmer for the embossed instructions. Does it say incandescent only? If so did you use ordinary tungsten filament light bulbs? If you used compact fluorescent or led it can blow up your switch, or give it false readings so that it doesn't know that there is a bulb there. Double check that any bulbs you put in don't bottom too early from having a fat stubby neck making electrical contact impossible, if so take out the bulb, turn off the electricity and put your finger in the socket and bend the center contact up enough to make contact.

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1 Answer

I think I have a Leviton double pole dimmer switch. It used to operate track lighting along with an on/off light switch in the same room (different entrance). I replaced the track lighting with a fan...


You mention a dimmer and a 2nd on-off switch.
You purchased a 'double pole' switch which I believe is a 3-way switch.

3-way switch has 3 screws (plus ground screw which will not be mentioned further)
3 screws on 3-way switch = one is dark colored, and 2 are brass colored.

You can guess. There are only 3 wires and you can keep trying different combination until both switches work. Do not change wiring on 2nd switch and sooner or later the right combination will appear.

On the other hand, electricians test wires using ordinary tester, before connecting anything.
If you want to test, it takes 3 ez steps.

Here's what I would do.
1) Look at wiring on 2nd switch.
Notice switch has 1 dark screw and 2 brass screws.
If you can identify the two wires on the brass colored screws, these are the 'travelers' and same two wires connect to brass colored screws on new switch. And then last wire connects to dark colored screw.

2) You have noted the wires carefully on dimmer, so remove dimmer, and separate wires for testing.
2nd switch is moved to down position.
We are NOT going to test wires on 2nd switch.
We are just testing wires at old dimmer.
Turn on power.

Power is on.
2nd switch is in down position.
Test each wire to bare ground wire.
One and only one wire will light up the tester.
Mark this wire.

3) Change 2nd switch, and move 2nd switch to up position.
Test each wire again to bare ground wire.
Again only one wire will light up tester.
Mark this wire.
If same wire lights up tester each time, then this is the Hot wire and it connects to new switch dark screw. And the other two wires go to brass colored screws.
If a different wire lights up each time, then these two wires are 'travellers' and they connect to each brass colored screw. And the last wire connects to dark colored screw.

Dec 16, 2010 | Electrical Supplies

1 Answer

We just bought a house and the living room has a light fixture and there is a dimmer switch that controls it. I removed the light fixture and installed a ceiling fan but the fan barely moves and the light...


You're correct. The dimmer switch was not made for that fan.

The Green is ground > so you're right there too. I assume other plugs nearby are working when dimmer is on. Check that to make sure.

By your description, I assume there is NOT another switch or dimmer that connects to same light. If so, you need a 3-way switch and the following instructions are void.

I suspect when you wired the new fan, that you saw the red and small black wires in the ceiling box. Did you connect the fan and light to those wires? If so, the following information will help you wire the switch.

Your incoming Hot line is probably the larger black wire that connects to Dimmer black >>> this wire will connect to either screw on the new switch

To test Hot wire for sure: Take out dimmer and mark wires for identification. Separate wires. Turn on power and test each wire to bare ground. Tape tester leads to wood sticks so hands are away from power. You'll be fine. Tester lights up on Hot wire.

Next: The smaller black and a red wires are a toss up.

Here's how I would proceed. Connect the black Hot to either screw on switch. Connect red wire to other screw. Put wire nut over small black. Turn on power. Flip switch. Check both lights and fan to see which works with red wire.

Next reverse the toss up wires. Put wire nut over red. Connect small black to switch. Check both lights and fan.

If red and small black control the light & fan, then connect them together on the same screw, and you're done.

If you want to control the fan and light separately, buy double switch, and then Hot connects to dark-colored screw on one side of switch, and red and small black connect to two different screws on opposite side of switch.

Oct 04, 2010 | Solar 10 Eagle Almond Commercial Double...

1 Answer

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It could be how you have it wired. 2 way switches can be tricky. One of switches will have a wire run to the chandelier and this is where your dimmer should go. Here's a link to a explanation of 2 way wiring. Hopefully this will help. If you want to check to see if it is the bulbs, you could put in non energy efficient bulbs although I think it's another problem. If it was the bulbs, the dimmer would at least turn on the energy efficient bulbs in the low position. Good luck!

Link to 2 way switch diagram

http://2wayswitch.com/2-way-switch-wiring-diagram/

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1 Answer

Different outlet went out after installing dimmer.


It's possible that he living room outlet feeds through the dining room switch and that a wire may have become disconnected when you put in the dimmer. I don't know the specifics of you home layout. If the dining room and living room are on different circuit breaker switches, this is not the problem.

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