Fitting a lampholder

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Lamp holder types

There are two types of lamp holder, plastic and metal. They may be found as part of a table lamp, or as a part of a pendant light fitting. The method of connection is similar for both pendant type and table lamp, but the metal and plastic variety require different considerations.

The first difference to note is that plastic fittings have no earth connection and should therefore only be connected via a two core flex. Metal fittings must always be connected via a flex with an earth wire.

Metal versus plastic lamp holders

The second consideration is that metal fittings are not suitable in some locations – the most notable of which is bathrooms. Plastic ones may be used in bathrooms, but choose the type with a loger plastic shroud which shields the components better.

Switch off the power supply and remove the fuse for the circuit, or, in the case of a table lamp, switch off and remove the plug from the power supply.

Connecting the flex to a lamp holder

Unscrew the fitting to expose the separate components. The construction of metal and plastic ones is a little different as you will notice from the pictures.

Feed the top cover (and retaining pieces in the case of the metal fitting) over the flex and push them along out of the way.

Note the length required for the conductors to reach their terminals.

Cut the outer sheath of the flex accordingly and peel back. Remove the excess with a craft knife.

Separate the conductors and strip the insulation of each back by about 1/2". Twist the separate filaments of each and connect the brown (live) to one terminal and the blue (neutral) to the other, making sure that they are fed round the supports which prevent strain on the connections.

Earth for metal lamp holders

In the case of metal fittings which, as noted earlier, must be earthed, you will find a small externally mounted earth terminal. The green and yellow earth conductor is fed to this from inside the fitting and secured with the retaining screw.

Double check your connections and slide the previously threaded components back down the flex and reassemble the fitting, taking care not to damage or pull the wires in the process.

• Flex
• Connecting flex