move or add ceiling lights - Homebase

how to... move or add ceiling lights
Tools for the job...
Screwdriver Small Insulated screwdriver
Electric drill Four terminal junction box
1mm2 two-core-and-earth cable
Light fi tting – pendant set
Bradawl
Ladder
Nails
Different coloured tape
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HBHOWDO44 October 2010
5: Remove the existing light fl ex
Disconnect all of the wires connecting the existing light fitting to the rose
mounting box by releasing from the terminals with a small screwdriver.
Before you disconnect any wires, make a note of which terminal each wire
connects to, so you can refl ect this sequence when you make any changes.
Marking each wire with different coloured tapes and using a digital camera or
mobile phone camera could help you.
6: Relocating a light (junction box wiring)
a. Using a screwdriver, carefully release the junction box light spur cable wiring
from terminals on the rose mounting box and then unscrew the rose mounting
box from the ceiling.
b. Take the junction box light cable and push it back up into the ceiling void.
c. The next steps now take place within the ceiling void.
d. If the existing light spur cable is long enough to reach the new position, you
could use it to connect the new light fitting to (assuming in good repair). Take
the existing cabling and feed it through the new hole. Now fix your new ceiling
rose to the new location.
e. If it’s not long enough, you will have to replace with a new length of 1mm2 or
1.5mm2 two-core-and-earth cable, extending from the existing junction box
to the new light position, running the new cable to avoid it being in contact
with thermal insulation or a source of heat – e.g. central heating pipe work. If
required, follow steps f to m.
f. Trace the existing light spur cable back to the junction box (fi g. 3).
g. Take the junction box cover off and using a screwdriver disconnect the existing
light spur cable wires from the terminals in the junction box being careful not to
displace any of the other wires. Take a note of the existing terminal connection
points so you can replicate the sequence.
h. Connect the new two-core-and-earth cable to the correct terminals on the
junction box, making sure you sleeve the bare earth wire with a green and
yellow sleeve. Then put the junction box cover back on.
i. Feed the new lighting cable through your new hole and enter the room again.
j. Hold the rose mounting box in place and mark the screw positions for attaching
to the ceiling.
k. Connect the new lighting cable to the rose mounting box. You can now fix the
rose mounting box to the new ceiling position with the screws provided.
l. Screw on the ceiling rose cover, add a lampshade (if applicable) and bulb, then
switch on the power supply.
m. Hide the marks left where the old light once was with filler and paint.
7: Adding a new light (junction box wiring)
For junction box circuits you can either add a new junction box into the power
cable circuit or add a spur from an existing junction box (we only focus on this
option). Alternatively, add a spur from an existing ceiling rose to your new light
location, as per section 9.
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Having created a new light position (section 4), now follow the same procedure
in section 6, but instead of replacing the old light spur cable, attach the new light
spur wires to the terminals into an existing junction box.
Connect the live (brown or red) wire to the existing live (brown or red wire)
terminal; its neutral (blue or black) wire to power circuit neutral (blue or black)
terminal and its earth wire (sleeved in green and yellow) to the earth terminal
(fi g. 4).
8: Relocating a light (loop-in wiring)
a. Using a screwdriver, release the wires from the terminals on the rose mounting
box for each attached cable, then unscrew the box.
b. Push all the loose cables back up into the ceiling void.
c. The next steps now take place within the ceiling void.
d. Take a new four-terminal junction box and connect the wires of the loose cables
you have just pushed through into the ceiling void (fi g. 3).
e. Connect the live (brown or red), neutral (blue or black) and earth (bare) wires
of the power circuit cable(s) to three separate terminals within the junction box,
cover the bare wire with a green and yellow sleeve.
f. Taking the switch cable, connect the live (brown or red) wire to the designated
live terminal, the earth (bare) wire to the designated earth terminal (sleeve wire
as above) and the (blue or black) wire to the fourth terminal that’s currently
unused. The blue or black cable connected to the fourth terminal should be
marked/sleeved with brown tape, to show it’s live.
g. O nce completed run a new length of 1mm2 or 1.5mm2 two-core-and-earth light
spur cable, extending from the location of the new light position and wire it into the
new four-terminal junction box, connect its live (brown or red) wire to the fourth
terminal where the neutral (blue or black) switch wire has been connected; its
neutral (blue or black) wire to the power cable neutral (blue or black) terminal and
its earth wire (sleeved in green and yellow) to the earth terminal.
h. To complete the job, follow steps 6i to 6m.
In line with the requirements of BS7671 the junction box, (with its screwed
terminations) must always be accessible for inspection.
9: Adding a new light (loop-in wiring)
To add a new light within a room on the same light switch, you can simply add a
spur from an existing ceiling rose to your new light location.
Having completed sections 2 to 4, connect a new length of 1mm2 or 1.5mm 2
two-core-and-earth cable, extending from the location of your new light position
to the ceiling rose you’ve chosen to add the spur to.
Feed the new spur cable from the ceiling void into the back of the existing rose
mounting box (fi g. 5). Temporarily take out the screws holding the box to the
ceiling, to give room to manoeuvre.
Connect the live (brown or red) wire to the fourth terminal where the blue or
black with brown sleeving switch wire has been connected; its neutral (blue
or black) wire to power circuit neutral (blue or black) terminal and its earth wire
(sleeved in green and yellow) to the earth terminal.
To complete the job, follow steps 6i to 6m.