DIY Doctor

Main navigation

Reoccuring Light Switch Prob.

Postby dsbutler71 » Mon Sep 03, 2007 12:57 am

I installed a new ceiling light yesterday and accidentally connected the wires incorrectly. When I flipped the breaker, it made a fizzing noise and I shut it off. After I wired the light correctly it turned on but the switch made a buzzing noise when I tried to turn it off (and the switch wouldn't shut the light off). I replaced the switch today and the same thing happened. Not sure if this matters, but there was no ground wire to connect to the light switch in the box. The lights on - and I can't turn it off. Any suggestions???...thanks...
Rank: Labourer
Progress to next rank:
Posts: 2
Joined: Mon Sep 03, 2007 12:50 am


Simply Build It

Postby thedoctor » Mon Sep 03, 2007 6:28 am

From your use of the word ground instead of earth wire we are wondering if this is an American installation. If it is we cannot help you as this is a UK specific website and all of our regulations are different. If not hang about and an answer will undoubtedly be with you soon.
Posts: 2526
Joined: Sat Apr 08, 2006 12:15 pm

Postby sparx » Mon Sep 03, 2007 7:01 pm

Hi Assuming UK wiring ie loop in with 3 sets of red, blk & earths then you have done the usual thing of not noting which one of the blacks was on its own & have put them all together, right?, WRONG!
If you go to the 'projects' part of this site you will find drawings of a ceiling rose. It clearly shows 3 reds together [not connected to light], 2 blks together [connected to the Neutral Blue] & one blk coming back from the sw. which is sw.Live to light.& should have been marked as red with tape/sleeving! & connects to brown of flex. Unless using a metal switch the earth {ground] not important.
when you switched on breaker with switch in 'off' position light will have come on, then when you turned sw. 'on' you are putting a dead short circuit across switch ,this will 'kill' it. you need to find out which 'Blk' is the sw, Live if you can't then you need help,regards
Rank: Project Manager
Posts: 2166
Joined: Wed Mar 21, 2007 8:33 pm
Location: The fifth continent.

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