Replace a standard light bulb
Most household light bulb fittings fall within four categories; bayonet, screw,
pin and blade. It isn’t always obvious which fitting you’re dealing with when
you start to replace a bulb, as the base of the bulb is usually concealed in the
Always turn the wall switch off before replacing a light bulb.
Bear in mind the following information as you attempt to remove one. If you’re
replacing a halogen bulb make sure you read the information in ‘Replace a halogen light bulb’. They require special treatment.
These fittings have a pin on either side, designed to fit into slots in the
bulb holder. Because the bulb holder is sprung, you’ll first need to press the
bulb in towards the bulb holder when trying to remove a bayonet bulb, Once the bulb can’t go in any further, turn it anticlockwise to pull it out.
When putting in a new bulb, line up the pins with the top of the slots, press
the bulb in and turn it clockwise to notch it in place.
The screw on a light bulb works the same as a wall screw. Turn the bulb
anticlockwise to remove it and clockwise to insert it.
Many halogen bulbs are fitted with pin fittings. You should be able to pull them
straight out, but sometimes the heat of the bulb fuses them a little, so a very
gentle jiggle might be in order. Some spotlights have pins that are wider at the
base in order to lock into a twist socket. Twist anticlockwise to undo them. See
'Replace a halogen light bulb'.
Some halogen bulbs have blades or dimples at both ends of the bulb, which
slot into sprung receptors on each side of the lamp head.
Christmas lights often have a wedge connection, which pulls out and pushes