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Old 04-15-2012, 10:57 PM   #1
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Need Help With Wiring


I have a light switch in my kitchen that is not being used. I plan to use it for a new light that will be installed over the counter. The switch box has a 3 way wire that is live. I have a basic current tester that lights up "110 V" when it detects a live circuit. When I use my circuit tester to test for current in the black wire (with neutral), it barely lights the tester. When I test the red wire (with neutral), there is no current. When i test the red and black together, the tester lights up nice and bright. So I am a little confused. I do not need it to be 3-way, this switch will only control one light. Any advice on how to wire this?

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Old 04-15-2012, 11:09 PM   #2
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It sounds like you are working with the second switch in a 3-way circuit which does not include the source power. If you want this new light to be seperate form the other switch, you will need to change the wiring in the other light switch.

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Old 04-16-2012, 07:03 AM   #3
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Find power, get it to the light source, use a cable for a switch loop to the single pole switch.
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Old 04-16-2012, 07:09 AM   #4
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Find power, get it to the switch box, run cable to light source, wire nut neutrals together at switch box, attach blacks from each cable at switch box to a terminal on switch.

On both diagrams I have not showed ground wires just to not clutter diagram.
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Old 04-16-2012, 12:33 PM   #5
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Thanks for the responses. I wired it up exactly like the second diagram but the does not work. When I test the nuetral and hot (black) wire the tester barely lights up so I'm thinking there is not enough current to power the light. I can't find a second switch this one is hooked with. When I kill the breaker for this switch it also kills a few receptacles, but that's it. This switch used to be used for something else before the previous owners remodled.
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Old 04-17-2012, 02:31 AM   #6
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why didn't you ask the electric specialist to help you wiring.it is more safety.
home light
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Old 04-17-2012, 03:09 AM   #7
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I think you are assuming too much.
You are assuming the white is a neutral, but it is not testing like one.

And what are you using to test with?

A "basic current tester" does not read volts!!

'Current' is amperage.

You need to do a voltage test with a known good neutral.
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Old 04-17-2012, 06:40 AM   #8
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Quote:
Originally Posted by wkumtrider View Post
Thanks for the responses. I wired it up exactly like the second diagram but the does not work. When I test the nuetral and hot (black) wire the tester barely lights up so I'm thinking there is not enough current to power the light. I can't find a second switch this one is hooked with. When I kill the breaker for this switch it also kills a few receptacles, but that's it. This switch used to be used for something else before the previous owners remodled.
Just because a wire's insulation is colored white does not mean it is a neutral. Look at my diagram in post #3. The white conductor at the switch is being used in the "switch loop". Perfectly legal BUT IT IS SUPPOSE TO BE REIDENTIFIED with black tape or markings to show it is being used as an "ungrounded conductor" or hot wire.
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Old 04-17-2012, 07:48 PM   #9
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I have a voltage tester. It measures 110, 220, and 480 volts. The 110 volt indicator lights up when I test the black and white wire, but apparently the white is not a neutral, and is not marked as such. There is a third, red wire but there is no second switch it is connected to.

What tester do you guys recommend to check for neutral, hot, etc?

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