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 Post subject: Light Wiring?Help
PostPosted: Mon Aug 21, 2017 12:43 pm 
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Hi, I hope someone can help :-)

I am trying to replace a light for a new one. I have 2x grey cables coming out from the ceiling, one of those grey cables has 2x red and an earth wire, the second grey cable has 1x red, 1x black and an earth wire.

Silly me what I should of done is taken a picture before I taken the old light down and disconnected the 2x grey cables from the terminal block.

By the way, before I taken the old light down, I did make sure the entire electricity was completely off :salute:

What I would like to know is how do you correctly wire it up to the terminal block?

Thanks for looking at my post and I hope you can help.


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 Post subject: Re: Light Wiring?Help
PostPosted: Mon Aug 21, 2017 7:54 pm 
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Only a guess
Black is neutral
Join the red (the one with the black) to one of the twin reds
The other twin red is called switched live

The lamp goes across Neutral and switched live

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Take it easy, a forum is only a collection of opinions. Above, are mine.

Which is correct? Metre or Meter? Click the link. to find out more.

No such thing as "Thou shalt put this wire here, Thou shalt put that wire there" .............Take a picture BEFORE you do the job.

If gloom had a voice, it would be me. :mrgreen:

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 Post subject: Re: Light Wiring?Help
PostPosted: Wed Aug 23, 2017 7:36 pm 
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someone-else wrote:
Only a guess
Black is neutral
Join the red (the one with the black) to one of the twin reds
The other twin red is called switched live

The lamp goes across Neutral and switched live


And the way to check whether that "guess" is right is to check the wiring at the switch. 2 reds at switch then correct. (probably assuming no junctions) anything else then a meter will be required to test.

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 Post subject: Re: Light Wiring?Help
PostPosted: Fri Aug 25, 2017 10:00 am 
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Hi, thank you both for replying to my post :salute:

I have taken a look behind the light switch socket and there is a grey cable and it has coming from it 1x red, 1x yellow, 1x blue and an earth wire.

The blue wire isn't connected to anything at all. The red and yellow wires are connected to the light switch and the earth wire is connected to the metal box in the wall that the switch sits on.

I do have another light in this same room and I have checked behind that light switch socket and there is a grey cable and it has coming from it 2x red which are connected to the light switch and an earth wire that is connected to the metal box in the wall that the switch sits on. This light turns on and off fine.

Thanks for looking at my post and I hope you can help.


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 Post subject: Re: Light Wiring?Help
PostPosted: Sun Aug 27, 2017 6:48 pm 
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Sorry not to get back sooner... you need a multi-meter with a resistance range to be sure. Pop into Maplins if you have one nearby, should cost less than 10 of your earth pound notes.

With the electric off set your meter to resistance (Upside down horseshoe symbol) put une on each red from the cable that has 2 reds... just those two, nothing else connected to those two reds. Next get someone-else (no not him) to turn the switch on/off if that is the switched pair then the meter will show infinity when off and virtually nothing when on. IF that happens then connect as per above, red from cable one(Black /red) connected together, black to neutral of new light.. the remaining red to live of new light.

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 Post subject: Re: Light Wiring?Help
PostPosted: Sun Aug 27, 2017 7:01 pm 
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the cable with the 2 reds, one will be red and the other black but has a red sleeve that should be your switch live


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 Post subject: Re: Light Wiring?Help
PostPosted: Sun Aug 27, 2017 7:33 pm 
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flash22 wrote:
the cable with the 2 reds, one will be red and the other black but has a red sleeve that should be your switch live


Sorry to not agree you could (in the day) get twin red cable. Now of course its twin brown.


Attachments:
red.jpg
red.jpg [ 2.49 KiB | Viewed 236 times ]
brown.JPG
brown.JPG [ 18.32 KiB | Viewed 236 times ]

_________________
Take it easy, a forum is only a collection of opinions. Above, are mine.

Which is correct? Metre or Meter? Click the link. to find out more.

No such thing as "Thou shalt put this wire here, Thou shalt put that wire there" .............Take a picture BEFORE you do the job.

If gloom had a voice, it would be me. :mrgreen:

:idea1: How to post a picture on this forum Click here
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