A Primer on Light Bulbs: Demystifying Electricians' Terminology

Posted by Electricians of South Auckland on 21 Jun 2026

When it comes to lighting your home, it is important to understand the different terms that are used to describe light bulbs and fixtures. A lot of people use the terms in a way that may cause confusion when it comes to buying the right bulbs or speaking with an electrician. We’ll explore the various terms used to describe fixtures and light bulbs to clarify the common misconceptions and explain why it’s important to understand these terms.

Common Names for Light Bulbs

There are a variety of terms that refer to light bulbs. Some of the most common are "lamp," "bulb," "incandescent," "fluorescent," and "LED." "Lamp" as well as "bulb" are commonly used interchangeably, but "lamp" generally refers to the entire light fixture, while "bulb" refers to the light source itself. "Incandescent" bulbs are the old-fashioned Edison-style bulbs which are gradually being replaced to make way for more efficient alternatives. "Fluorescent" bulbs are tubes-shaped, long bulbs which are typically employed in commercial settings, while "LED" bulbs are the latest and most energy-efficient option.

The terms used to describe different types of Light Fixtures

Apart from the different names for light bulbs, there are numerous terms that describe different types of light fixtures. "Can lights" are recessed fixtures which are mounted in the ceiling. While "pendant lights" are suspended from the ceiling using cords or chains. "Chandeliers" are huge, decorative fixtures that are often found in dining rooms or in the entryway"sconces" are fixtures that hang from the ceiling, and "sconces" are fixtures that are mounted to the wall which provide task or ambient lighting.

Common Misconceptions

One of the most common misconceptions is that you can’t make use of the LED bulb in lighting fixtures which use incandescent bulbs. Although LED bulbs have different wattage and shapes however, there are a variety of LED bulbs that are able to be used in existing fixtures. Another misconception has been that fluorescent lights are all unflattering and harsh However, there are many fluorescent bulbs that emit soft, warm lighting.

Why it’s important to be aware of These Terms

Knowing the different terms used for light bulbs and fixtures is essential for a number of reasons. First, it ensures that you’re using the appropriate bulbs for your fixtures, which will improve brightness, and also reduce your energy costs. Additionally, it will help when communicating with an electrician, who may need to know the particulars of the lighting fixtures you have in order to fix or upgrade them. Also, knowing these terms will make shopping for bulbs much easier as you’ll know exactly what you should look for when shopping in stores or online.

Conclusion

Understanding the different names used for fixtures and light bulbs can make a big difference in the lighting of your home. By knowing the different names for fixtures and light bulbs and fixtures, you’ll be able purchase the correct bulbs, communicate with electricians more efficiently and get the most of your lighting fixtures. If you have questions about lighting , or require help choosing or installing lighting fixtures, call Electricians of South Auckland for a consultation or to request repair via 0800 245 410.

FAQ Section:

Can I use light bulbs with LEDs in an installation which requires incandescent bulbs?

Yes, but it is important to ensure that you have the right bulb size and shape for the fixture.

What is the most efficient bulb?

The LED bulb is the most efficient and longest-lasting type of bulb.

How often should I replace my light bulbs?

It’s dependent on how frequently you utilize the light and the type of bulb. Incandescent bulbs typically last for around 1,000 hours, while LED bulbs can last for up to 25000 hours. It is recommended to replace bulbs every year or two to ensure optimal lighting quality. If you notice that your bulbs are blinking or not so bright like they were and it’s a sign they might need to be replaced.

Alongside these frequently asked concerns, our team at Electricians of South Auckland is always available to answer any other questions you have about lighting, or to help you choose the right fixtures for your home. There is a broad selection of lighting options to choose from, including chandeliers, LED bulbs sconces, and more.

Whether you’re looking to upgrade your lighting fixtures replace them or need assistance selecting the right bulbs to fit your needs, our experts are here to help. Contact us today for a consultation or repair at 0800 245 410, and let us help you make the most of the lighting in your home.