3 cables coming from ceiling light - how do you wire up


Postby Shazzy P » Wed Jun 13, 2007 3:40 pm

I want to put up a new light fitting and when I took the old one down I'm faced with 3 cables consisting of 3 red, 3 black and 3 earth coming from the ceiling. How do I wire my new light fitting to these cables? Is it as easy as all live together, all neutral together and all earth together?

Any would be appreciated.

Cheers, Shazzy P.
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Postby thedoctor » Thu Jun 14, 2007 7:36 am

Please see our project on replacing a light fitting and also read the poroject on Part P of the building regulations.
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Postby Jeffmo » Tue Jun 19, 2007 1:30 pm

Hi , it is reasonably easy ...once you know how , all reds should be together in a connection block ( plastic block - electrical block bought from any large diy store ) then you have all earths together ( if metal light fitting then an earth needs connecting to body of fitting , best way - connection block all earths from ceiling and run a earth wire from there to light fiting . Now there may be a problem ! You have three black wires , one of these is the switch wire back to your light switch , even though you may think this is not a live wire it can be so it needs to be and should be marked with a red sleeve .I f it isn't try a little further up ,it may have moved . Ok the two BLACK wires which are not sleeved should connect to the blue flex wire from light , the black wire that is sleeved should be connected to the brown flex wire from light .. Ok . easy aint it . Any probs get back to the forum. Remember 230 volts hurts SWITCH of circuit before taking any action . Cheers and good luck ( be safe) Jeff
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Postby BLAKEY1963 » Tue Jun 19, 2007 2:36 pm

[quote="Shazzy P"]I want to put up a new light fitting and when I took the old one down I'm faced with 3 cables consisting of 3 red, 3 black and 3 earth coming from the ceiling. How do I wire my new light fitting to these cables? Is it as easy as all live together, all neutral together and all earth together?

Any would be appreciated.

Cheers, Shazzy P.[/quote]
ALL BLACK TOGETHER ( OH NO ) 4TH OF JULY. DO NOT DO IT !!!!!!!!!
DOC INFO SHOULD BE READ AND UNDERSTOOD FIRST.
JEFFMO SPOT ON. HE AND MYSLEF WOULD ADVISE GETTING IT CHECKED
BY EXPERT HELP .
A CONTINUITY METER , BETWEEN RED AND BLACK OF SWITCH ,
DEFLECTING WHEN SWITCH IS CLOSED , COULD HELP TO IDENTIFY
BLACK AND TAG IT RED.
FOLLOW JEFFO AND DOC S ADVICE
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