Problem replacing two ceiling lights


Postby nerolab » Sun Jan 20, 2008 12:54 pm

We have had the ceiling replastered and therefore have not been able to do a straight swap for the new lights which are on a transformer with Live neutral and earth wires.

Light connection 1 - has two reds which are joined together, two earths, a yellow cable, 1 x black and 1 x blue.

Light connection 2 - 4 x reds joined together, 1 x blue 1 x black 2 x earths together

With the current configuration, on connection 2, I have power at the switch - The Black is permanently live.

On connection 1 I have no power on either black or blue and the hall light does not work however there is power at the awitch ad the bulb holder - the bulb has been tested.

Can anyone assist please? Regards

JOhn
Last edited by nerolab on Sun Jan 20, 2008 2:47 pm, edited 1 time in total.
nerolab
Rank: Apprentice
Progress to next rank:
0%
Posts: 5
Joined: Sun Jan 20, 2008 12:46 pm

Sponsor

Simply Build It

Postby nerolab » Sun Jan 20, 2008 2:21 pm

In addition, I've checked the supply before the lounge lights which is fine. The two reds on conection one are together wihich maintians the circuit to connection two.

With all four reds together the switch has power but the black is also permanently live.

Also, the hall light has power to the switch and to the bulb holder but strangely the bulb doesn't illuminate. By accident I shorted across from the blue to the earth and the bulb lit up!!

Any ideas please as this is day two on this now!!

regards

JOhn
nerolab
Rank: Apprentice
Progress to next rank:
0%
Posts: 5
Joined: Sun Jan 20, 2008 12:46 pm

Postby ericmark » Mon Jan 21, 2008 9:28 am

You have a black/blue which is not neutral but return from switch and you have tried to use it as a neutral. The normal ceiling rose has three cables feed in, feed to next lamp, switch. The latter is often a standard brown and blue or old colours red and black cable and a brown or red sleeve is put on the blue or black wire to show it can be live not neutral. I think this wire is mixed up with neutrals. See other posts or maybe now on projects on how two work it out if you have lost sleeve. Since you are not using standard rose yours will be a little different.
ericmark

Postby nerolab » Mon Jan 21, 2008 9:53 am

thanks - tried most things but wil have another stab at it tonight and will let you know the outcome

Appreciate your help

John
nerolab
Rank: Apprentice
Progress to next rank:
0%
Posts: 5
Joined: Sun Jan 20, 2008 12:46 pm

Postby nerolab » Tue Jan 22, 2008 9:00 am

Hi Eric

Made progress last night..... after snapping my mains tester screwdriver that is!

I got the hall /outside lights working together with one of the new lounge lights.

Basically I took it all apart and connected the two reds in lamp 1, earths together, blue & blaclk together which left a yellow wire.

On lamp 2 3 reds went together, one which was the input from the other lamp on the circuit, one which went to the switch and the other to the hall continuing the circuit. The 4th red was the return from the switch. In addition, I connected the blue & Black together and the earths. The connections are all with 5a strip connectors.

Having tested the connections with a neighbour's tester plus a pendant lamp first, I proceeded to fit the new lamp which worked fine.

I connected the pendant to lamp 1 with a coonection to the black/blue and to the yellow but this didn't work. The hall & lamp 2 work fine.

I can only presume that shoving the terminals throough the ceiling has disturbed the connection to lamp 1 maybe?

Your thoughts are welcome on this one

Kind regards

JOhn
nerolab
Rank: Apprentice
Progress to next rank:
0%
Posts: 5
Joined: Sun Jan 20, 2008 12:46 pm

Postby ericmark » Tue Jan 22, 2008 11:52 am

Glad to here you got most of it working. The fact you have three core and earth at the light makes it non standard and very hard to advise. Properly you are correct in looking for disturbed wire. But being non standard maybe its time to accept your limitations and get an electrician?
ericmark

Postby nerolab » Sat Jan 26, 2008 7:17 am

hi eric

thanks again... i got so cjose but ended up getting a spark who was confused by the way it had been rewired.... all sorted now

john
nerolab
Rank: Apprentice
Progress to next rank:
0%
Posts: 5
Joined: Sun Jan 20, 2008 12:46 pm

Display posts from previous
Sort by
Order by



  • DIY How to Project Guides

  • DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!



 


  • Related Topics