What is Cap
Cap is the base or connector of a lamp or lighting fixture. It serves as the interface between the lamp and the socket or fitting, providing both electrical contact and stability. The design of the cap can vary depending on factors such as the type of lamp, voltage, wattage, and specific requirements of the lighting fixture.
Different types of caps are used to ensure compatibility between lamps and fittings. For example, “GZ10 spotlight” and the “GU10 lamp” have different cap designs. The GZ10 spotlight features a square corner base, while the GU10 lamp has a beveled base. This distinction in cap design is crucial because it determines whether the GZ10 or GU10 can be used in a specific light fitting.
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Caps are standardized to ensure compatibility across different manufacturers’ products. International standards, such as the IEC 60061, define the specifications and dimensions of various lamp caps and bases. These standards help ensure that lamps with compatible caps can be used interchangeably in appropriate fittings.
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Frequently Asked Questions
What Does the Cap Do in a Light Bulb
The cap or base of a light bulb connects the bulb to the lamp socket, allowing for an electrical connection.
What Is Cap Type in Bulbs
There are two primary types of bulb cap: Bayonet Cap (BC) and Edison Screw Cap (EC). These caps serve as a connection between the bulb and the power supply when attached to a light fitting. Additionally, there is a less commonly used cap known as Pin and Push.
What Does Cap Type E27 Mean
E27, also known as the Edison large screw, is a widely used bulb type in lamps. It is available in various fittings such as incandescent, CFL, halogen, and LED. The E27 bulb features a 27mm screw cap that is compatible with lamp fixtures and is suitable for 230/240V.
What Size Is a B15 Cap
The B15 cap, also known as the Small Bayonet Cap (SBC), has a diameter of only 15mm. Despite its smaller size, it offers the same versatility and convenience as its larger counterpart, the 22mm cap. Small bayonet bulbs with B15 caps are commonly used in lamps that require a smaller fitting, such as desk lamps and wall lights.
What Type of Cap Is E26
E26 is often known as a Medium Edison Screw (MES). Therefore, an E26 bulb is any bulb or lamp that uses the E26 cap or base for installation and electrical connection.
What Is E14 Cap
The E14 cap, also known as the Small Edison Screw (SES E14 bulb) cap, is a smaller variant of the 27mm cap commonly found on smaller bulbs like reflector, candle, pygmy, or golf ball bulbs. These E14 small screw bulbs are frequently used in lamps that require smaller fittings, such as desk lamps and wall lights.
