Video reference. The "How to install 4lite's 600mm x 600mm CCT Panel" guide from the Screwfix YouTube channel shows the full installation from ceiling preparation to the colour temperature test. Screwfix is the UK's largest trade tools retailer and the video covers the UK-specific product from the 4lite range available in their stores.
1. Isolate the circuit and gather your tools
Turn off the correct lighting circuit MCB, tape the handle and test dead at the existing fitting location. You will need: a tape measure, pencil, the manufacturer's cutting template (usually taped inside the panel box), a jigsaw or pad saw for plasterboard ceilings, insulated screwdrivers, wire strippers and a set of Wago connectors or a 5-way connector block for joining the conductors.
If you are installing into a suspended tile grid ceiling, ignore the cutting tools entirely. The panel drops straight into a standard 600x600mm grid tile space once you have removed the existing tile. Simple.
2. Check the ceiling void depth
Reach up through the existing fitting hole, or drill a 10mm inspection hole near where the panel will sit, and use a torch to check the void. Most recessed 600x600mm LED panels need between 30mm and 50mm of void behind the ceiling surface for the driver unit to sit comfortably. If you are working in a ground-floor kitchen with a solid concrete soffit above, or a very shallow timber floor void, measure before you buy.
If the void is shallower than 30mm, buy a surface-mount panel instead. The surface-mount version has a thin aluminium frame that sits proud of the ceiling by about 20mm. Not as flush, but it works in tight spaces and no cutting is needed beyond a small hole for the cable to pass through.
3. Mark and cut the aperture
Use the template provided with the panel to mark the cut-out position on the ceiling. Double-check the position avoids joists by using a joist detector or by probing with a bradawl. Cut along the marked line with a jigsaw or pad saw. Keep your strokes slow and steady near the corners - plasterboard cracks from rushed cuts and then you have a visible gap around the bezel.
Test-fit the bezel frame into the aperture before you touch any wiring. It should sit flush with a consistent gap of about 1 to 2mm around the outside. Too tight? Enlarge the aperture slightly. Too loose? The bezel will not grip and the panel will sag over time.
4. Bring the cable through
Feed the existing lighting circuit cable down through the aperture, or route a new cable from the junction box or ceiling rose if you are moving the fitting position. There should be enough flex or cable to work with comfortably below the ceiling surface without pulling or straining.
If the cable is very short or there is any sign of damage to the insulation (cracking, discolouration or scorch marks), extend it with a joint housing inside the void rather than straining a short cable to reach the connector block. A Wago Wagobox is the tidiest way to make a maintenance-accessible joint in a ceiling void.
5. Wire up the driver
The LED panel comes with a short flex tailed from the driver unit. The driver is either integral to the panel or supplied as a separate brick that sits in the ceiling void. Connect the driver flex to the lighting circuit conductors using your connectors:
- Brown conductor (driver) to brown (circuit live)
- Blue conductor (driver) to blue (circuit neutral)
- Green-and-yellow conductor (driver) to green-and-yellow (circuit earth)
If the existing wiring uses old UK colours (red for live, black for neutral, bare copper for earth), connect red to brown (driver live), black to blue (driver neutral), and sleeve the bare copper in green-and-yellow before connecting it to the earth. Never re-use old pre-2004 wire colours without sleeving or labelling them correctly.
Tuck the driver up into the void so it is not resting on the back of the panel. If the driver is integral, this step is not needed.
6. Fit the panel and restore power
Clip the LED panel into the bezel frame following the manufacturer's instructions. Most 4lite CCT panels use four spring-loaded clips that you push up through the frame, then release so they grip the ceiling surface from above. Do not force the panel - if one corner does not clip, check that the bezel is correctly seated and the void is deep enough for the clip to travel.
Return to the consumer unit and switch the lighting MCB back on. The panel should illuminate immediately. CCT panels change colour temperature by cycling the switch: off, then on again within one second. Each cycle steps through warm white (around 3000K), neutral white (4000K) and cool daylight (6000K). Pick the one that suits the room and leave it there.
When to call us
A like-for-like LED panel swap on an existing circuit is non-notifiable work. The moment it becomes a new circuit run from the consumer unit, or you discover the ceiling void has no earth, call. Lighting upgrades and new circuits are one of the most common small jobs across homes in Sandwich and east Kent.
Need new lighting in east Kent?
Richard fits LED panels, downlights and ceiling lights across Sandwich, Deal and Dover. Small fitting swaps start at the £10 per 10-minute rate; new circuits quoted free.
Contact Richard