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-   -   Light Wiring Question (http://www.diychatroom.com/f18/light-wiring-question-122790/)

mataguri 11-08-2011 01:09 PM

Light Wiring Question
 
Hey Guys,

Having a slight electrical issue and im hoping someone here can help me. I live in a house that was built around 1970. The light in my kitchen is one of those long flourescent lights and is original to the house. It stopped working a few weeks back so I decided I'd swap it for something more modern. I picked up a new light from my local DIY store and seeing that the connections on it are your standard blue,brown,green/yellow plug style connections I thought I'd put it up myself.

I removed the original light expecting wires that would match up with the connections on my new light but instead I found 2 red wires and a black wire. I also noticed that when the light was removed the light in the adjoining room no longer turned on. I googled this and it was suggested that the black wire is the live wire for the kitchen light and the red wires are the neutral for the kitchen light and the light for the adjoining room. Following that I stuck the black wire into the live terminal on the light and both red wires into the neutral terminal.

I turned back on the power and tried the new kitchen light, worked perfectly. I then tried the light in the adjoining room but it didnt work, however when I turn off the kitchen light it works perfectly.

Has anyone any suggestions of where I messed up and how to fix this? If it helps but lights are turned on from a dual gang light switch like this http://www.qvsdirect.com/images/D/sc...hite_large.jpg. I havent changed any of the wiring on the switches. Each switch has a black wire coming from it which is going into the wall and the switch for the kitchen has a red wire that is connected to the swich for the adjoining room in the same terminal as a second red wire which is going into the wall.

joed 11-08-2011 06:37 PM

You need to post your location. I believe you are probably in the UK by your wire colour descriptions.
Do you remember how the old light was connected.
Hopefully one of the Europe electrical guru who come by will be able to help you.

mataguri 11-08-2011 07:12 PM

Quote:

Originally Posted by joed (Post 766858)
You need to post your location. I believe you are probably in the UK by your wire colour descriptions.
Do you remember how the old light was connected.
Hopefully one of the Europe electrical guru who come by will be able to help you.

Hey Joed, thanks for the reply. I live in Ireland. The old light only had two terminals, one which had both red wires and one for the black wire.

joed 11-08-2011 10:23 PM

Then from your description it sounds like it should work.
It sounds like the red wire is the power wire to the other fixture and the black is the switched wired for the light. Check the connection where you have the two reds and make sure it is connecting the two reds to each other.

frenchelectrican 11-09-2011 02:15 AM

The old UK colours the Red is active { live or line } while Black is Netural.

So the new colour is Brown is active while Bleu is netual.

So you may hit a switch loop so you have to look little closer on it ( some case you will see a coloured sleeve or tape or marked ) that is used for switch loop source.

you say only three conductors in there look little deeper you should see extra conductors in the box or point location so once you see the extra conductor you can able tell which one is switch loop and straight thru fitting.

If you have more question just holler one of us will assit you on that.

Merci,
Marc


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