Screw Lamp Holders, Pin Lamp Holders & Wedge Lamp Holders, and many more are lamp holder types that will help to hold the lamp. Explore the complete guide to lamp holders, including various types, sizes, and fixing methods.

Learn about screw, pin, bayonet, and wedge lamp holders, as well as halogen, metal halide, and fluorescent lamp holders. Discover how to wire a lamp holder and find reputable suppliers.

What is a Lamp Holder?

A lamp holder, also known as a bulb holder or socket, is a device that holds the light bulb or lamp securely in place and provides the necessary electrical connections for it to function. Lamp holders come in various types, sizes, and configurations to accommodate different types of light bulbs and lamps. They play a crucial role in ensuring the safe and efficient operation of lighting fixtures.

Lamp Holder Types

There are numerous lamp holder types available, each designed to accommodate specific types of light bulbs or lamps. Understanding the different lamp holder types can help you choose the right one for your lighting needs. Here are some important lamp holder types you should know about:

different types of lamp holder

Screw Lamp Holders

Screw lamp holders, also known as Edison screws or ES lamp holders, are widely used in household lighting fixtures. They feature a threaded base that allows the bulb to be securely screwed into place. Common screw lamp holder sizes include E14 (small Edison screw), E27 (standard Edison screw), and E40 (giant Edison screw) for larger applications.

Pin Lamp Holders

Pin lamp holders, as the name suggests, use pins to hold the light bulb in place. They are commonly found in fluorescent lamps, compact fluorescent lamps (CFLs), and some types of LED lamps. Pin lamp holders come in different configurations, such as 2-pin and 4-pin, depending on the lamp type they are designed for.

Bayonet Lamp Holders

Bayonet lamp holders are prevalent in many countries, especially in the United Kingdom and Commonwealth countries. They feature a bayonet mount, which allows the bulb to be pushed and twisted into place. Common bayonet lamp holder sizes include B22 (bayonet cap) and B15 (small bayonet cap).

Wedge Lamp Holder

Wedge lamp holders utilize a wedge-shaped base to hold the bulb in position. They are commonly used in applications where compact size and ease of installation are essential, such as landscape lighting and automotive lighting.

Halogen Lamp Holders

Halogen lamp holders are specifically designed for halogen bulbs, which emit a bright, white light. They ensure a secure connection and proper electrical contact for halogen lamps, which operate at higher temperatures than traditional incandescent bulbs.

Metal Halide Lamp Holders

Metal halide lamp holders are used for metal halide lamps, which produce a high-intensity light commonly used in commercial and industrial settings. These lamp holders are designed to withstand the high operating temperatures and voltage requirements of metal halide lamps.

Medium-Base Lamp Holders

Medium-base lamp holders, such as the E26 in North America, are versatile lamp holders used for a wide range of light bulbs. They can accommodate various types, including incandescent, CFL, and LED bulbs, making them a popular choice for residential and commercial lighting.

Mogul-Base Lamp Holders

Mogul-base lamp holders, like the E39 in North America, are larger lamp holders used for high-wattage applications. They are commonly found in industrial and outdoor lighting fixtures that require powerful light sources, such as high-intensity discharge (HID) lamps.

Fluorescent Lamp Holders

Fluorescent lamp holders are specifically designed for fluorescent tubes, which are commonly used in commercial and residential settings. These lamp holders ensure proper electrical connections and support the long, tubular shape of fluorescent lamps.

Compact Fluorescent Lamp Holders

Compact fluorescent lamp (CFL) holders are specialized lamp holders designed for CFL bulbs, which are energy-efficient alternatives to traditional incandescent bulbs. CFL holders accommodate the unique shape and size of these bulbs while providing reliable electrical connections.

Bayonet-Base Lamp Holders

Bayonet-base lamp holders, similar to screw-in bayonet holders, use a bayonet mount for quick and secure bulb installation. They are commonly used in specific applications where bayonet-base bulbs are required.

Wedge-Base Lamp Holders

Wedge-base lamp holders, similar to wedge lamp holders, provide a secure connection for wedge-base bulbs. These lamp holders are commonly used in low-voltage lighting applications and are easy to install.

Lamp Holder Adaptors & Reducers

Lamp holder adaptors and reducers are accessories that allow you to adapt a lamp holder to accommodate different bulb types or change the size of the lamp holder base. These handy devices provide flexibility and compatibility between various lamp holders and bulbs.

Lamp Holder Sizes

Lamp holders come in different sizes to match the corresponding light bulb or lamp base. Here are some common lamp holder sizes:

  • E14: This is a small Edison screw size commonly used in smaller lamps and decorative lighting fixtures.
  • E40: This is a larger Edison screw size typically used in industrial and street lighting applications.
  • E27: This is the standard Edison screw size widely used in household lighting fixtures.
  • B15: This is a small bayonet cap size often found in smaller lamps and decorative lighting fixtures.

The size of the lamp holder is critical when selecting the appropriate light bulb or lamp for your lighting fixture. Ensure compatibility between the lamp holder size and the corresponding bulb or lamp base.

Fixing Methods and Lamp Holder Mounts

Lamp holders can be attached to lighting fixtures using different fixing methods. Here are the most common fixing methods and lamp holder mounts:

Push Fit

Push-fit lamp holders feature a spring mechanism that allows for easy installation and removal. By pushing the bulb into the lamp holder, it locks into place securely.

Snap Fit

Snap-fit lamp holders use a snapping action to secure the bulb in place. They are commonly found in fluorescent and CFL lamps.

Screw Fit

Screw-fit lamp holders require the bulb to be screwed into the holder, creating a secure connection. This fixing method is prevalent in household lamps and fixtures.

How to Wire a Lamp Holder?

Wiring a lamp holder requires basic electrical knowledge and precautions. Here is a general guide on how to wire a lamp holder:

  1. Turn off the power: Before working on any electrical connections, ensure that the power supply to the lighting fixture is switched off.
  2. Prepare the wires: Strip the insulation from the ends of the wires connected to the lamp holder and ensure they are clean and free from any damage.
  3. Connect the wires: Match the corresponding wires from the lamp holder to the supply wires. Typically, the neutral wire connects to the silver terminal, and the live wire connects to the brass or gold terminal. Follow the manufacturer’s instructions for specific lamp holder models.
  4. Secure the connections: Once the wires are properly connected, secure them by tightening the terminal screws. Ensure there are no loose or exposed wires.
  5. Test the installation: After wiring the lamp holder, turn on the power supply and test the lighting fixture to ensure proper functionality. If any issues arise, double-check the wiring connections and consult a qualified electrician if necessary.

It is essential to prioritize safety when working with electrical connections. If you are unsure or uncomfortable with wiring a lamp holder, it is best to seek professional assistance.

Lamp Holder Suppliers

When looking for reliable lamp holder suppliers, consider the following reputable companies:

  • TE Connectivity: TE Connectivity offers a wide range of electrical components, including lamp holders, connectors, and sockets, known for their quality and reliability.
  • S Lilley & Son: S Lilley & Son is a well-established supplier of electrical fittings, including lamp holders, with a focus on delivering durable and innovative products.
  • JKL Components: JKL Components specializes in providing lighting solutions and offers a comprehensive range of lamp holders suitable for various applications.
  • Orbitec: Orbitec is a trusted supplier of lighting components, including lamp holders, known for their high-quality products and wide selection.

When purchasing lamp holders, ensure that you source them from reputable suppliers to ensure product quality, reliability, and safety.

FAQs: Lamp Holder Types

Here are some frequently asked questions about lamp holders:

Is B22 the Same as E27?

No, B22 and E27 are different lamp holder types. B22 refers to the bayonet cap size, primarily used in the United Kingdom and Commonwealth countries, while E27 refers to the standard Edison screw size widely used in many countries.

What is the Difference Between E14 and E27?

E14 and E27 are both Edison screw sizes, but they differ in their dimensions. E14 has a smaller diameter and is commonly used in smaller lamps and decorative lighting fixtures, while E27 has a larger diameter and is widely used in household lighting fixtures.

What is an E14 Light Bulb?

An E14 light bulb refers to a bulb that has an Edison screw base with a small diameter. It is commonly used in smaller lamps and decorative lighting fixtures.

Is E7 the Same as ES?

No, E7 is not a standard lamp holder size. ES refers to Edison screw, which commonly comes in E14 and E27 sizes.

What are the different types of lamp holders?

Different types of lamp holders include screw lamp holders, pin lamp holders, bayonet lamp holders, and wedge lamp holders. There are also specific lamp holders for different types of lamps, such as halogen lamp holders, metal halide lamp holders, fluorescent lamp holders, compact fluorescent lamp holders, and more.

What is the name of the bulb holder?

The bulb holder is commonly referred to as a lamp holder or socket.

How many lamp types are there?

There are numerous lamp types available, including incandescent bulbs, CFLs, LEDs, halogen lamps, metal halide lamps, and fluorescent lamps. Each lamp type may require a specific lamp holder.

Which type of lamp holder is used for the lamp?

The type of lamp holder used for a specific lamp depends on the lamp’s design, base type, and wattage. It is crucial to choose a lamp holder that is compatible with the specific lamp type and meets safety requirements.
By understanding lamp holder types, sizes, fixing methods, wiring procedures, and reputable suppliers, you can make informed decisions when selecting and installing lamp holders for your lighting needs. Remember to prioritize safety and consult professionals when necessary to ensure proper installation and functionality of your lighting fixtures.


Lamp holders are essential for anyone involved in lighting solutions. By familiarizing yourself with the different types of lamp holders, such as screw, pin, bayonet, and wedge, you can ensure compatibility with various light bulbs and lamps. Knowing the sizes of lamp holders, such as E14, E27, E40, and B15, allows you to choose the right holder for your specific needs. Additionally, being aware of fixing methods like push fit, snap fit, and screw fit enables you to securely install lamp holders in your fixtures. Wiring lamp holders correctly is crucial for safe and reliable operation, and consulting professionals when needed is always a wise decision.

By considering reputable lamp holders suppliers like TE Connectivity, S Lilley & Son, JKL Components, and Orbitec, you can ensure the quality and reliability of your chosen lamp holders. Exploring FAQs regarding lamp holders clarifies common doubts, including differences between B22 and E27.

With this comprehensive guide, you are equipped with the knowledge necessary to make informed decisions about lamp holders and create effective lighting solutions. Whether you are a homeowner, electrician, or lighting professional, understanding lamp holders empowers you to choose the right components and ensure the proper functioning of your lighting fixtures. Enjoy the benefits of well-designed and safely installed lamp holders as you illuminate your spaces with brilliance and efficiency.