Question about Lightolier Ivory Galaxy Slide Dimmer Switch 600w X600-i

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In my electrical box, I have one black, one white and one ground wire coming in. There is a single pole switch in the box now. Black goes to one terminal, white to the other terminal, and the ground to the ground terminal. The single pole dimmer switch I have has two black wires and a ground wire. How do I wire this? Everything I have seen online is a 'middle of the run' version with 2 blacks and 2 whites in the box, but I only have one black, one white and a ground.

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  • i_haddow Aug 26, 2010

    This can be tricky.
    First we need to find out how many wires there are in the box holding the fixture because it could be wired "end of line", or it could be sharing wires with another run.
    If there are only one of each at the fixture the circuit is "sharing" wires elsewhere. This is tough to figure out.
    If there are two or more of each it gets easier because the switch is now "end of line".
    If the switch is "end of line" then the white wire at the switch is acting as black (wrap a piece of black electrical tape around it to remind yourself.



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With just two wires other than the ground in the box, both of which were connected to a single pole switch, one must be the incomming power and the other is connected to the load. You can find out which is which either by opening up the fixture box where you will probably find that it is conneted with two white wires or by very carefully positioning the wires so they each are far from touching anything, turning the power on, and testing to see which is hot.
If the dimmer you have does not require you to know the difference between the hot and load wire, then just connect the white and black wires to the dimmer. As the previous poster said, the white wire should have black tape on it.

Posted on Sep 02, 2010


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Dear Dean,
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The old single pole switch has 2 black wires.
One black wire is hot from circuit breaker box, and the other black wire goes to load (light, fan, motor)

New device has black wire: connect this to hot from circuit breaker box.
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Hi, How do you wire a Leviton switch to the next switch in a 4 gang box? Diagram? Thanks! Michael

Switches are not identified.
Single-pole switches are wired differently than 3-way.
Wire colors are not identified. Some boxes have red and black wires that carry power.
Add a comment and fill out details after studying image and reading information.
I am not there, so you can also add a comment and include in-focus photo of your switches that you posted on Flickr.

Following image shows single-pole switches, with typical black and white wires.
No bare copper ground wire is shown. Ground wires connect to green screw.

So your new switch has 2 brass screws. No white wire connects to single-pole switch. One screw will have 1 black wire that goes to light fixture. The other screw will have 1 or 2 black wires that jumper or connect to the other switches as shown in image.

White wires are usually twisted together and covered with wire nut and pushed to back of box.

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I have a Intermatic Wall Timer Model EJ500 and I only have 3 wires and can I usethe Wood Model #59028 and where can I get one if it works. I had a single pole switch when I installed the Intermatic. The...

Yes you can use 59028 if you have Neutral or bare ground wire.

EJ500 is battery operated.
Woods 59028 uses electricity to power internal electronics. Like plugging in alarm clock so timer mechanism works.
That's why 59028 has white wire and EJ500 does not.

EJ500 can be used for 3-way switching, so it has extra red wire that is capped off in single pole operation. EJ500 blue wire connects to Load (light,fan, motor)

59028 is for single pole only. The red wire connects to Load.

Here's how to wire 59028:
1) Timer-green-wire connects to bare ground wire.
2) Connect 59028 red wire where EJ500 blue wire was connected.
3) Connect 59208 black wire where EJ500 black wire was connected.
4) When electric box does not have white neutral wires, then connect timer-white to bare ground.
5) Turn on electricity, and push door on 59028 timer to activate on-off override. If Load comes on, timer is wired correctly. If Load does not come on, then reverse timer-red and timer-black wires.

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Links below show wiring for both Utilitec 7-day timers
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The best way to start is to identify exactly which wires came off old switch.
How to wire
1) Timer-green-wire connects to bare ground wire.
2) Switch has 2 insulated wires. Take switch wires and connect them to timer-black-wire and timer-red-wire. Choose either one for now.
3) In back of electric box are white wires twisted together and covered with wire nut. Connect timer-white to these wires.
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In your case the wiring for the ST01 is as follows:

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Switch box #2: Remove all of the existing wires from the 3-way switch. The three-way switch will have 2 screws the same color (usually black) and 1 screw (usually brass). For this scenario, one of the black screws will _not_ be used.

Connect the Black wire in the 3-wire cable coming from switch #1, the Black wire going to the lights, and a short Black pigtail together under one wirenut. The pigtail is then connected to the brass screw on the 3-way switch. The Red wire in the 3-wire cable coming from switch #1 is connected to one of the 2 black screws on the 3-way switch (pick one).

In effect you are installing a single switch at switch box #2. In fact, you can use a regular single pole switch if you want too.

To finish, connect the White wire in the 3-wire cable coming from switch #1 to the White wire going to the lights.

Grounding is the same as switch #1 except you'll need a pigtail to connect to the green screw on the 3-way switch.

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As I understand it you have a live circuit going to a light fixture that had a switch built into it. You have removed the fixture and now you want to run this wire to another location and install a switch in the circuit.

You will be extinding these two wires (white and black + ground) to the new location. No problem ... Somewhere between where you start and where you finish, you will break the black wire and install a single pole switch. All connecctions must happen inside a electrical box.

So, install the new wire in the box where you will start your extension. Run to the new switch box. You dont even have to cut the white wire. You will wrap the green or ground around the ground screw on the switch, Cut the black wire . put one end under one side screw, put the other end under the other side screw. From this box run your wire to the next box where you will install your fixture.

If you are using metal boxes, they must be grounded to the circuit. You can use pig tails for this, Best deal is to use plastic boxes that dont require grounding.

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