Switch off the power at the consumer unit for the circuit concerned. If you have removable fuses at your consumer unit, switch off the power at the consumer unit and remove the fuse for this circuit.
1. Before removing the old ceiling rose that you wish to replace, you will need to carefully identify the cables and conductors. To help understand the connections and wiring in a ceiling rose, see our Ceiling Rose - Wiring and Connections article.
Label the cables and conductors
2. The easiest way to do this is to label the conductors as you disconnect them. In this example we have a loop system. There is a switch cable and two circuit cables.
3. Note the location of the flex connections of the light fitting then disconnect them. This may include an earth conductor depending on the requirements of the light fitting.
4. With the flex out of the way, disconnect the conductors of one cable at a time, labelling them as you do so.
5. Remove the switch cable conductors and label them. The earth conductor can be left for the moment.
6. Remove the first circuit cable conductors and label them. The earth conductor can be left for the moment.
7. Remove the other circuit cable conductors and label them. Disconnect all the earth conductors from the earth terminal.
8. With all the conductors released from the terminals you can now undo the ceiling rose and ease it carefully over the cables. Take care not to damage the insulation as you do this.
Reconnecting the cables
9. Prepare the new ceiling rose by breaking out the cable entry blanking piece.
10. Ease the cables through this point and feed the ceiling rose back up to the ceiling.
11. Fix the ceiling rose to the ceiling with suitable screws.
12. Reconnect all the earth conductors securing them in the earth terminal block.
13. Take the first circuit cable and reconnect the conductors. The brown (old colour = red) is connected to the live loop terminal, and the blue (old colour = black) is connected to the neutral terminal block.
14. Take the second cable and repeat the process. The brown (old colour = red) is connected to the live loop terminal, and the blue (old colour = black) is connected to the neutral terminal block.
15. Take the switch cable and reconnect its conductors. The brown (old colour = red) is connected to the live loop terminal block, and the blue (old cable colour = black) conductor - which should have been tagged with brown (old tag colour = red) – is connected to the live terminal block.
16. Reconnect the lampholder flex securing the blue to the neutral terminal and the brown to the live terminal. Ensure that the flex conductors are held in the securing lugs to prevent strain. Depending on the earth requirements of your lampholder there may also be an earth conductor in the flex which should be connected with the other earth conductors in the earth terminal.
17. Double check that all your connections are to the correct terminals, and all are secure with no exposed conductor showing.
18. Replace the ceiling rose cover carefully to ensure none of the wires gets damaged or caught. Hold the cover level as you replace it to prevent cross threading.
19. Once you are sure that all work has been completed correctly, switch the power back on at the consumer unit. In the case of removable fuses, replace the fuse for the circuit, and switch the power back on.