Switch wiring


  #1  
Old 03-10-03, 07:29 PM
RagnCajn
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3 sets of wires

I have 3 sets of wires coming to 2 switches one of the swithces is controled by another switch one is a one way. I just replaced both and I cant figure out how to wire them. Can anyone help me out?
 
  #2  
Old 03-10-03, 07:52 PM
J
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Unfortunately, there are lots of possibilities. Do you remember anything about how the old switches were connected?

Let's start by being more precise about the three sets of wires. Is this two sets of black/white/ground, and one set of black/red/white/ground?

If you remember nothing about how the switches were wired before, there may be quite a bit of work involved to figure this out. If you're patient enough to answer all of our questions, we're patient enough to stick with you until it's solved.
 
  #3  
Old 03-10-03, 08:25 PM
RagnCajn
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Originally posted by John Nelson
Unfortunately, there are lots of possibilities. Do you remember anything about how the old switches were connected?

Let's start by being more precise about the three sets of wires. Is this two sets of black/white/ground, and one set of black/red/white/ground?

If you remember nothing about how the switches were wired before, there may be quite a bit of work involved to figure this out. If you're patient enough to answer all of our questions, we're patient enough to stick with you until it's solved.
I have 1 black & white with the black being hot coming to the box the other 2 sets of wire's are red, black and white. My kitchen light has 2 swithces one being in this box and the other switch in this box is for my dining room table. I also noticed while trying to switch them around I must have a wire running to my back patio because this light came on while playing with these wire's also.
 
  #4  
Old 03-10-03, 08:57 PM
J
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Is there a switch somewhere that controls the back patio light too? Is the dining room between this switch box and the back patio?

Best guess, based on preliminary observations is that the black/white cable is incoming power. One of the black/red/white cables is travelers to the other kitchen switch. The other black/red/white cable is carrying switched power to the dining room light, and unswitched power to the back porch light or switch.

Next step is to shut off the breaker and pull down the dining room light. If my guess is correct, you will see a black/red/white cable coming in, and a black/white cable going out. The dining room light itself will be attached to either the black or red of the black/red/white cable, and the outgoing black of the black/white will be attached to the red or black wire of the black/red/white. Please report back what you find there.

We've still got a long ways to go, but we'll take this one step at a time.
 
  #5  
Old 03-10-03, 09:09 PM
RagnCajn
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You got it right I do have a switch for the back patio also in another wall. I also noticed a jumper wire in the box where I'm replacing these switches connecting the two switches. Does this jump from the common post to supply power to these other items? I'll be back : ) Thanks for the help. This is the first time I've been to this site which you can tell from the amount of post but I love it already.

Thanks Cajun:
 
  #6  
Old 03-11-03, 06:38 AM
J
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This process will go more smoothly if you read my post carefully and answer all the questions contained therein. The currently outstanding questions are:[list=1][*]Do you remember anything about how the old switches were connected?[*]Is the dining room between this switch box and the back patio?[*]Shut off the breaker and take down the dining room light (without disconnecting any of the wiring). Please report back what you find there.[/list=1]Eventually we will probably need to open up other boxes and examine the wiring. I may need to ask you to go to Home Depot and buy a multimeter for some testing. But I'm trying to be methodical and go through the process one step at a time. If at any time you just want to bag it and call in a pro to sort it out, just let us know.
 
  #7  
Old 03-11-03, 07:02 AM
RagnCajn
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(1) I do remember how the wire's where hooked up.
(2) Yes the dining room is between.
(3) I did take the light down and checked these wire's.

I already have a small AC/DC tester from 120V-480V.
I finally figured out how to hook them back up.


I have only one more question and I want bug you anymore. The 3way switch has a jumper from the com post to the other switch I suppose to make it hot. Is this safe and is it the only way it can be done.
 
  #8  
Old 03-11-03, 09:45 AM
J
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It is not safe if you have 2 wires under one screw.
 
  #9  
Old 03-11-03, 10:16 AM
lestrician
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It can be done by making a "pigtail" and putting one wire to each switch.
 
  #10  
Old 03-11-03, 12:09 PM
RagnCajn
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Actually I have one wire under the screw and one in the hole slot at the back of the switch. Still both are from the same supply post.
 
  #11  
Old 03-11-03, 01:07 PM
J
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That works and is code but many people don't like the back stab connection because they come loose and make intermittent problems later.
 
  #12  
Old 03-11-03, 01:32 PM
RagnCajn
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Thats what was happening originally the light had started flickering. Thanks for the help guy's.
 
  #13  
Old 03-11-03, 02:39 PM
J
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Cajun, congratulations on solving your problem. That cursed backstab was probably causing the flickering. A pigtail (short section of wire connecting the screw to a wire nut with the two wires) would probably prevent a reoccurrence.
 
 

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