What Does a Light Bulb Label Tell You

by Selina Luo
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What Does a Light Bulb Label Tell You

Many people still feel confusing about how to choose to the bulbs suitsthem from dozens of light bulbs from. How do you know what you need? How do you know what you’re getting? Fortunately, most of the information you need is on the packaging label.

Here is a guide to help you understand the most common terms used in lighting along with specs, and certifications.

lighting LEDbulb


Most people equate watts with brightness – a 40 watt bulb is not very bright, but a 150 watt bulb is very bright. But watts really tell you how much energy the bulb is using. The number of lumens produced by a bulb is actually the figure that explains how bright a bulb burns. With new energy-saving light bulbs you can’t rely on watts to tell you how bright a bulb is. The higher the lumens, the brighter the bulb. This chart shows the average lumens for a traditional incandescent bulb:
150w = 2,600 lm
100w = 1,600 lm
75w = 1,100 lm
60w = 800 lm
40w = 450 lm



2.Energy Use

A light bulbs watt tells us how much energy the bulb uses, but more energy efficient light bulb like LEDs and other low energy bulbs list their ‘watt equivalent.’ This watt equivalent tells you how bright the bulb is compared to an incandescent of the same wattage. So, a 60-watt equivalent LED light bulb may only use 10 watts and be much more energy efficient than a 60 watt incandescent.




Based on using a bulb for three hours a day, this number will give you the bulb’s life expectancy. Lifespan can be affected in many ways. For example, CFLs don’t perform as long when they are exposed to extreme temperatures, moisture or movement or if they are turned on and off repeatedly for short periods.


4.Light Appearance

The color of the light emitted by the bulb is listed in Kelvins. Incandescent bulbs give off a warm, soft light we are familiar with and fall in the 2,700-3,000K range. Bulbs of this color are best for relaxed settings, such as the family room or bedroom. The 3,500-4,100K range gives off a bright, cool white light best for the kitchen and office, and the 5,000-6,500K range gives off light that best imitates bluish daylight, which is good for reading or task lighting.


5.Energy used

Watts tell you how much energy the bulb uses. So a 10-watt LED that provides the same amount of light as a 60-watt incandescent saves you energy and money.



Now that you have learned how to choose the right bulb for you?
Take a look at the homepage of E.P. light and choose the light bulb that suits you.

EP Design Lab aims at inheriting and innovating traditional culture via bringing different elements together such as craftsmen, heritage craftsmen, cutting-edge designers, artists, quality factories, sales platforms and so on, to participate in the independent research and development, design, production, supply, promotion and operation of cultural and creative products.



by Selina Luo


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