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Electrical

Changed light fixture, lights in other room don't work

Anonymous user 28/02/2024 - 3.58 PM

FIXED: Hi - I changed an old ceiling rose fixture for a new LED light fixture. It's a loop circuit, so there's three of every wire coming in. I wired everything up and the new lights worked perfectly, but later discovered that the lights in the other room didn't work. I realised this was because I had connected the three red wires to separate ports on a junction box, so I connected them using the old metal connector from the ceiling rose. All lights worked in both rooms. Reattached the light fixture to the ceiling after testing and now the lights in the other room don't work again. Stripped the wires back and reconnected, but still not working in the other room. Hope someone can point out where I'm being an idiot! Thanks Elec-Craft - the live wires were all fine, but hadn't even occured to me it could be the neutral. Only one was connected into the port and the twist together had come loose. After making sure the two neutrals were firmly connected, everything works!

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1 Answer

Anonymous user

You have disconnected either a neutral or a live looping to the next section of lights. You need to know which wire is which else you will cause an accident. If your lighting is wired as loop-in-loop-out at the ceiling rose you will have three lives in the middle (loop), two neutrals in the N terminals and one switched live in the SL terminal. If you are changing the ceiling rose to a light fitting it is usual to terminate all the loop lives in one separate connector block, put the two neutrals on the light fitting terminal marked N and the switched live on the light fitting terminal marked L or SL. Unless you have a means of testing which wire is which you may get a 'bang' when switching on! Call an electrician in is my advice. He will sort it in minutes. Well done!
Answered13 February 2021
9