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Wire a ceiling light

Ive got 2 black wires and 1 green and yellow wire

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Is your house older, Some old wires its hard to tell which one is the grounded conductor(nuetral), Both Look black. If this is case You need to test it with a voltage tester- The green and yellow is a ground wire. Test the green with the voltage tester, Along with one of the blacks, if the Black and green set of the voltage tester that black is the hot. hook it up to the black on the lt. hook white to the other black. and green to either green screew or ground wire which ever is provided

Posted on Jan 08, 2009

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Dimmer switch 2 blacks 1 green. Wall has 2 reds, a black and a bare ground.


Maybe an extra lead that ran up to ceiling box. Sometimes electricians run three wire for extra functions like ceiling fan / light combos.

Dec 22, 2015 | Electrical Supplies

1 Answer

I have s2-lfsqh-wh 300w 1.5a can this be wired as a 3 way if so how


I doubt it. They are designed for a 3 wire cable going to a ceiling fan with 2 loads. They likely would not design a special 2 in one switch if one side is a 3 way. You will have to have 2 switches and a double box to do the same job.

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Hi *****,

I'm an electrician and can help you with this problem. First - shut off the power. Check your wiring as I describe the connections below.

If this is the only switch operating the fan and light, it should be wired as a single pole in the direction sheet. That is as follows:

1) one black wire - it should be connected to the "hot" power source, 2) one green wire - it should be connected to the bare / green ground wires & switchbox (if metal), 3) one red wire - it should be connected to the fan hot wire, 4) one yellow wire - it should be connected to the light hot wire, the remaining wires (yellow with a "3 way label" and red with a "3 way label") should not be connected to anything and capped with a wirenut.

The wiring changes if you are using a second switch to operate either the fan or light (download & view the wiring diagram provided here to follow along with my text). In this case, the hot wire from the fan or light would connect to the black screw of a standard 3 way switch, and the remaining two terminal screws on the switch would connect to the red / red with 3 way label - or yellow / yellow with 3 way label pair. Power and ground wiring on the dimmer black and green are the same as the single pole wiring described above.
I hope this helps & good luck!

Jul 08, 2012 | Electrical Supplies

1 Answer

I believe my power source is in the ceiling. I just want to wire a light but use a leviton switch and dimmer at the wall. Can't figure this one out. Can you help. There are two red wires, one black and...


Question needs more details. Let me answer as if you have one light and one switch, and one cable coming into switch box from ceiling.

Usually a switch-dimmer combo operates 2 different Loads (lights).
One light is controlled by switch, other by dimmer.

If power source is in ceiling, then one cable enters switch box.
Cable has black, white and ground wires
Old switch had 2 brass screws where black and white wires connect
Black wire brings Hot down from ceiling, and white wire connects back to Load (fan).
Neutral wires are in ceiling box, and not inside switch box, and are discussed.

With new dimmer: Black Hot wire from ceiling connects to dimmer black wire.
White Load wire connects to one of the red wires.
The other red wire goes to another Load, which is unknown at this point.

Add a comment for more free help. Say what cables and wires enter box, and what Loads you are controlling. Also add exact model number so expert can reference manual. Levition instruction sheets and manuals usually have toll free number.

Also take advantage of fixya expert assistance live.
For a price, expert works with you via e-mail or phone while you work on circuit or any do-it-yourself project.
Fixya is always less expensive than a service call.

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1 Answer

How to install


Lutron S2-LFSQ is made to control one ceiling paddle fan & 1 light. Switch will not work on florescent lights.
See manual

To use this product, your fan and light must already be controlled by 2 separate switches.

If you have just one switch that turns on the light & fan together, the S2-LFSQ will not work (without additional wiring).

Okay, you have two switches. One switch turns fan on-and-off. The other switch turns light on-and-off.

Here is wiring diagram from manual: See diagram larger

8263536.jpg

Here's how to wire:
-Before disconnecting wires from existing switches, mark each wire with tape and pen.
-There is one wire that feeds power to both switches > mark this the 'Hot wire' and it connects to Lutron black wire (if you are unsure about this wire, remove switches, separate wires, turn on power and test each wire to bare ground, tape tester leads to wood sticks so hands are away from power, Tester lights up on Hot wire)
-The switch that controls fan > mark this the 'Fan wire' and it will connect to Lutron Yellow wire
-the switch that controls light > mark this the 'light wire' and it will connect to Lutron Red wire
-Lutron Green wire or bare wire connects to bare ground wire.

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I need to install a diva low voltage electronic dimmer. An incandesent dimmer was previously installed. lights flickered. There are 4 wires on the dimmer. (green black whate and yellow) I know what to do...


The dimmer connections should go like this.

Black from dimmer to black Constant Power In Wall
White from dimmer to Neutral (Whites) in wall
Yellow from dimmer to wire out to light (usually black)
Green from dimmer to BARE GROUND WIRE

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Leviton 057 dimmer 2 black and 1 green wire in a


i want two dimmer switch parrel they both fhave two black and one green how fo you wire it up

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I am replacing a light switch for a 2way dimmer


ok- this is a complicated one... first these are called 3-way switches... two switches controlling one light(s) try this web site to help you figure it out.. you will probably have to open up the ceiling fixture to figure out which wire is which... http://www.thecircuitdetective.com/3and4wyinfo.htm#threebasic

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Trying to hook up a dimmer switch it has a red black yellow and green wire the box has a black white and ground which wires get connected together?


For a single-pole installation:

1. Connect the 2 white wires together (one from the source and the other to/from the light fixture) - 2 wires
2. Connect the black wire from the source to the black wire on the dimmer switch - 2 wires
3. Connect the black wire to/from the light fixture to the red wire on the dimmer switch - 2 wires
4. Connect the ground wires - 3 wires

Mar 23, 2009 | Electrical Supplies

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