To connect a ceiling light, depending on the mounting height, a standing or trestle ladder is required. The usual ceiling height in apartments is 2.50 m. For rooms with such height, a ladder should be equipped with at least 5 steps. This ensures a safe stand for the handyman and do-it-yourselfer.
Furthermore, a small slotted screwdriver and a Phillips screwdriver suitable for the installation screws are almost always required. In addition, a two-pole phase tester (test lamp) or a multimeter is necessary. In addition, a pair of side cutters and wire strippers should be handy.
An impact drill with a suitable concrete or masonry drill bit, as well as screws and dowels, are required for fastening the light. Last but not least, you need a pencil and insulating tape, and you’re ready to go!
Preparation and safety instructions
The new lamp is already ready for installation and is just waiting to be connected. Before, however, almost always, so here, the old ceiling lamp must be removed.
However, before starting work on the lamp, the supply line to the switches and thus to the ceiling lamp must first be de-energized. In the fuse box of the apartment or in the meter cabinet of the house are the individual circuit breakers for the respective area or. Room. If possible, the area in question should be disconnected at all poles. However, this requires an appropriate circuit breaker to be installed to disconnect both phases and neutral from the mains supply. If this is not the case, the residual current circuit breaker must also be disconnected.
To make sure that no third party will switch on the fuses again, the fuse can be taped off with insulating tape and marked with an appropriate notice.
Please familiarize yourself with the basics and safety measures before working on electrical installations and equipment. Make sure you are authorized to perform this work and that all applicable laws and regulations in your country are met. They are unsafe? Then you better ask a professional!
Disconnect the old ceiling lamp from the power supply
The first step in connecting a lamp, as mentioned earlier, is to disconnect and remove the old ceiling lamp.
To do this, remove the lampshade so that the connection unit including the bulb socket is revealed. Depending on the design, the connecting wires protruding from the ceiling are connected via so-called luster terminals, plug-in terminals, lamp terminals or directly to the luminaire connection.
Remove the installed lamp (z.b. a light bulb) is removed and the absence of current is determined with the two-pole phase tester or the multimeter directly at the connection points. Only now the connections may be loosened.
Normally the cables have the colors brown, orange or purple (sometimes black) for the switched phase, i.e. for the current inflow, the color blue for the neutral conductor and the color combination green-yellow for grounding. After disconnecting the connections, the bare ends of possibly live wires – that is, phase and neutral – are secured with insulating tape.
Dismantle old ceiling lamp
After the connections are complete, the screws on the old ceiling light can be loosened and the light can be removed from the ceiling.
NoteIt is quite common to find flush-mounted sockets under ceiling lights. So if several additional wires appear after removal, do not get confused!
However, care should be taken that no bare spots are visible under the additional wires. Under certain circumstances, these can trigger a short circuit if touched!
Preparation for connecting the LED lamp
Since new ceiling lamps almost always have different drill holes, the next step in connecting the lamp is to drill the appropriate holes. For this purpose, the three connecting cables of the ceiling connection are led through the opening provided for this purpose, the lamp is held against the ceiling and the drill holes are marked with a pencil.
Attention: Please take care not to mark the new drill holes in the area of the under plaster supply wires. Drilling into it would be counterproductive. Normally, the supply wires are laid at right angles to the wall where the light switch is located. So avoid this area when marking the drill holes!
Tip: It is often possible to determine which direction the concealed piping is running by simply inspecting the light outlet.
Using a percussion drill or, if necessary, a hammer drill, the marked holes are now drilled and the plugs pressed into the holes.
Tip: A small upside down plastic cup or tennis ball put over the drill works wonders. Not only that you do not get dirty yourself. There is also much less cleaning to be done afterwards!
Insulate wires and install ceiling lamp
If an insulating tube, usually a silicone tube, is included with the new ceiling lamp as installation material, it should be always are used!
The insulating tube is a protection of the wires from the heat generated by the ceiling lamp. The normal insulation of the wires is required for ca. 65° Celsius, in case of constant and strong heat exposure it will become brittle very quickly. In extreme cases, the insulation crumbles and a short circuit occurs.
The insulating tube is pulled over the cables coming from the ceiling and threaded through the recess provided for this purpose on the lamp. Then the ceiling lamp is loosely fastened with the screws for the time being.
Connecting the LED lamp
Now the new ceiling light is connected with the connecting wires. Depending on the version, there is a colored marking on the connection part of the new LED ceiling lamp or the connections are identified by letters and symbols.
Thereby stands P or L for the Phase, N for Neutral wire and PE or a sign with three crossbars and a vertical line for the Ground wire.
Depending on the design of the lamp (if z.B. If there are no metal parts that can be touched), it is not necessary to connect the ground wire. So also here. The grounding is simply shortened and remains in the insulating tube. The other wires are connected together as follows:
- Neutral conductor – (wire) blue to blue (lamp)
- Phase – (wire) brown to brown (lamp)
- Ground – (wire) green-yellow, not connected
When connecting the lamp, make sure that no bare spots are visible. This prevents possible short circuits from the outset.
Next, the insulating tube is clamped into the connection housing, the housing is closed and this is fastened to the lamp housing.
Functional test of the lamp and mounting of the cover
Before completing the connection of the lamp, screw the lamp and attach the lampshade, it is advisable to perform a test. Nothing is more annoying than to have finished connecting the LED lamp only to find out that it does not work at all.
To do this, the fuses and the RCD are switched on again for a short time and the ceiling lamp is tested.
Once the test has been passed, the fastening screws, which were previously only slightly tightened, are tightened and the lampshade is mounted.
The result: Connected LED lamp
After switching on the fuses again, the LED light can now show its effect in interaction with the lampshade for the first time.
With the right preparation, basic knowledge and appropriate caution, even the do-it-yourselfer can connect a lamp. If there are still uncertainties, we strongly advise to consult a specialist. Health always comes first!