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The part of the lamp that connects into the light fitting is generally known either as the “cap” or “base”. This provides the electrical contact and also often the physical location of the lamp. A vast variety of caps and bases exist in order to help make sure that only the correct type of lamp is used in any given fitting. This section shows the most popular fittings:Bayonet Cap With its familiar “push and twist” action, “ bayonet cap” (also known as BC or B22d) is used on most regul …

While there are many different light bulb fittings and bases, perhaps the most important difference is the voltage they operate at. You’ll find information on the voltage of each of the LED light bulbs in the detailed listings on the SimplyLED website. Mains voltage bulbs The mains electricity supply in the UK and Europe is 230V AC (Alternating Current). This powers the majority of lights in the home, and in commercial and public places. LED light bulbs work on low voltage DC (Di …