DIY Forum

 

Ultimate Handyman Ultimate Handyman Ultimate Handyman Ultimate HandymanUltimate Handyman on Pinterest

 

DIY Forum/Home improvement advice forum

 

 

A-Z CONTENTS | DISCLAIMER | DIY VIDEO | HOME | SAFETY FIRST | FORUM RULES

It is currently Wed Sep 20, 2017 3:08 am
Visit Thermo worx


Time zone: Europe/London [ DST ]




 

 


Post new topic Reply to topic  [ 5 posts ] 
Author Message
PostPosted: Wed May 10, 2017 10:05 am 
Offline
Newly registered Member

Joined: Wed May 10, 2017 8:44 am
Posts: 3
Has thanked: 1 times
Been thanked: 0 times
Hi guys

I'm relatively new to DIY and in particular home electrics. I've just moved into a new house and need to replace a ceiling rose in one of the bedrooms - seemed straight forward enough and I figured it would be a good place to start.

I've removed the cover and am faced with the picture in the attachment. As I'm an amateur I just wanted to check my thinking really:

  • I believe that there are two colouring schemes here - the red/black from the house wiring and the brown/blue from the ceiling rose down to the bulb-holder.
  • This appears to be a different/older style of ceiling rose with the terminals arranged around the casing, rather than in a line like all the examples I see online. I assume that the principles are still the same!
  • I assume that the earth cable is held in the plastic block.
  • I'm a little confused as to which terminal block is serving which purpose. The top block has a brown wire down the bulbholder and the bottom block has a blue wire down to the bulbholder, so I would assume they are 'live' and 'neutral' terminals respectively. However both also have a black wire into them, rather than the red and black (respectively) that I would expect. There is a red wire going into a single terminal block in the lower right of the photo and then back out again. Is this the loop? Any help on unpicking this would be much appreciated!

Now that I look at the photo I think I need to do some more poking around in there to identify all the cables better.

Feedback and advice much appreciated.

Cheers

Andy


Attachments:
File comment: Ceiling rose internals
ceilingrose.jpg
ceilingrose.jpg [ 135.99 KiB | Viewed 399 times ]
Share on FacebookShare on TwitterShare on DiggShare on DeliciousShare on Google+
Top
 Profile  
Reply with quote  
PostPosted: Wed May 10, 2017 10:20 am 
Offline
UHM Super Moderator
User avatar

Joined: Fri Jan 27, 2006 10:54 pm
Posts: 3378
Has thanked: 164 times
Been thanked: 518 times
I'll move this to lighting.


Top
 Profile  
Reply with quote  
PostPosted: Wed May 10, 2017 4:39 pm 
Offline
Senior Member

Joined: Sat Sep 01, 2012 7:03 pm
Posts: 6326
Has thanked: 23 times
Been thanked: 1045 times
Label them before you do anything.

The reason you have "two colour schemes" on the wiring is easy. Flex (That is going to the lamp holder) changed to the "new colours" many years before twin and earth changed colours.

The single black should have red tape on it as it is switched live
The two blacks are neutral

You are lucky you only have 2 cables that rose is the last one on the run, open another rose you should find 3 cables, each with 3 wires.
The two reds are live.

Do a search on this forum for "changing a light" (or similar) as what "you expect" and how its actually done are two different things. What you have is correct, oh and you are right about the rose being old style.

_________________
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



For this message the author someone-else has received gratitude : andymh
Top
 Profile  
Reply with quote  
PostPosted: Mon May 15, 2017 7:22 pm 
Offline
Newly registered Member

Joined: Wed May 10, 2017 8:44 am
Posts: 3
Has thanked: 1 times
Been thanked: 0 times
This was a big help, thanks. Job done.


Top
 Profile  
Reply with quote  
PostPosted: Mon May 15, 2017 8:29 pm 
Offline
Approved Electrician

Joined: Sun Apr 24, 2011 7:01 pm
Posts: 2302
Location: South Yorkshire
Has thanked: 131 times
Been thanked: 472 times
someone-else wrote:
Label them before you do anything.

The reason you have "two colour schemes" on the wiring is easy. Flex (That is going to the lamp holder) changed to the "new colours" many years before twin and earth changed colours.

The single black should have red tape on it as it is switched live
The two blacks are neutral

You are lucky you only have 2 cables that rose is the last one on the run, open another rose you should find 3 cables, each with 3 wires.
The two reds are live.


So why two black neutrals? If this was the last one on the run then there would be only one black neutral.....


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 5 posts ] 


Similar topics
   

Time zone: Europe/London [ DST ]


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Visit Hilti


 

 

 

News News Site map Site map SitemapIndex SitemapIndex RSS Feed RSS Feed Channel list Channel list
ultimatehandyman privacy policy

Contact

 

Powered by phpBB® Forum Software © phpBB Group

phpBB SEO