Lampholders
Figure 14 illustrates a standard Bayonet Cap ( BC ) lampholder. BC lampholders are normally found in domestic installations. They are also available with a long shield. The shield, which is screwed on, is also used to retain any lampshade, which may be fitted.
Figure 15 illustrates a partly sectioned BC lampholder with the shield removed. BC lampholders are designed for quick and easy lamp removal and replacement. However, they must hold the lamp in firm electrical contact to prevent the lampholder from overheating. Connecting pins, which are spring loaded help, achieve this. A good cord grip is also an essential feature of lampholders and this must be properly utilised in order to take the strain of a possibly heavy lampshade, away from the flex terminations.
