Collection: T8 LED Tube Light Fixtures | T8 LED Bulbs
About T8 LED Tube Light Fixtures | T8 LED Bulbs
Buying Guide: The A-Z of T8 LED Tubes
The availability of a plethora of options makes it hard to decide on the right kind of LED tube lights. From a wide array of LED lighting fixtures, how do you decide which ones suit your requirements?
To help you get out of this dilemma we have come up with this guide. It will help you through the process of picking the right kind of tube so that you don’t waste your valuable time and money.
This guide will not only take you through everything that is there to know about light-emitting diode (LED) tubes; but also inform you about the importance of replacing your old fluorescent tube lights.
Without further delay, let's dive into the bright world of T8 and T12 tube light fixtures.
What are LED and Fluorescent technologies?
In general, an LED has two plates of semiconductors- one having positively charged particles known as ‘holes’ and the other having negatively charged ‘electrons’. The two plates collectively make up a ‘light-emitting diode’.
Now, when an electric current passes through the diode, the holes, and electrons move in the opposite directions. This ensures that holes collide with electrons. Holes exist at a lower energy level then electrons. So, when the two collide, electrons lose some energy in the form of photons, i.e, Light.
Thus, as a result of the movement of atoms, LEDs (semiconductors) emit light. The number of photons that release during the movement (of electrons and holes) determines the luminosity an LED fixture. However, LED manufacturers can manipulate the luminosity (lumen output) by adding impurities (by a process known as doping) in the semiconductor. Doping, or adding impurities to a semiconductor (LED) allows manufacturing LED lights in various colors (such as red, blue, green, orange, etc.) and hues (such as warm white, cool white, and daylight white).
HOW FLUORESCENT TUBES WORK
Unlike LED technology, Fluorescent lighting works on a different principle. The ends of fluorescent tubes have tungsten filaments which heat up in response to a magnetic field generated by the AC current flowing through the circuit.
Now, the heated filament results in the flow of electricity. The starter in the lighting fixture enables the flow of electricity. There is also a ‘ballast’ present in the fixture of the fluorescent tubes which controls the flow of electricity to prevent the filament from overheating. Thus, it is crucial to have a ballast, for without it the filament will overheat, and the tube will explode (probably).
The inside of the tube contains a mixture of Argon and Mercury vapor which mostly emits ultraviolet light. There are various chemicals with a specific property called ‘fluorescence’ which convert this UV light into visible light. These chemicals form a coating on the inside of the tube to help create a spectrum of colors.
The LED technology offers a number of advantages over fluorescent lighting technology. Energy efficiency and eco-friendly properties are at the tips of this iceberg.
In the next section, we will look in detail the advantages LED tube lightshave over the conventional counterparts.
WHY SHOULD YOU PREFER LED TUBE LIGHT OVER FLUORESCENT TUBES
As you may know from reading the above section, LED tube lighting fixtures work on a more cleaner and efficient process. Operating an LED does not involve gas, heating of filament, and the requirement for additional components (like ballasts and starters). However, some LED tube lights do support ballast.
Digging deeper, you will realize that LEDs offer many advantages. Once you choose to install LED fixtures, you’ll never go back to conventional lighting technologies.
Let us have a detailed look at what T8 LED bulbs offer
Efficiency: LEDs offer energy efficiency like no other technology has ever. They convert up to 95% of electrical input into bright light. Thus LEDs lose only 5-10% of input energy in the form of heat. Thus, they allow massive savings of up to 75% on utility bills. The efficiency also means that a lower watt LED light can replace a much higher watt fluorescent light.
For instance, an 18W LED fixture produces an equal amount of light as a 50W fluorescent. The use of LEDs also results in a decrease in one’s reliability on the utility grid. resulting in less emission of greenhouse gases, making LEDs eco-friendly as well.
High CRI: The color rendering index is a measure of how accurate the colors are, in comparison with daylight. A low CRI light would render inaccurate colors that appear far from what they would actually look like under broad sunlight.
CRI ranges from 0 to 100 where 0 means every color will look the same, and 100 means true or accurate colors. Fluorescent tubes that have a high CRI are energy guzzlers. Thus, they are not a popular choice. On the other hand, LEDs commonly hover between a CRI of 80-90 while providing higher power efficiency.
Long-lasting: LED lights have no moving parts, they do not radiate excessive heat, and do not have any fragile components. Thus, they provide a longer lifespan. These lights go through an exhaustive testing period of 50,000 hours, so they offer a lifespan of the same duration.
Meaning that an LED lighting fixture is not a sprint runner, but a marathon runner, with the speed of a sprint runner. Having the capacity to function 24 hours for 5.7 years (approx), LED fixtures can function up to 11.4 years, if used 12 hours a day.
CCT: CCT or ‘correlated color temperature’ determines the hue of the white light that comes from LEDs. The CCT is measured in Kelvin.
- If the color temperature is less than 2000 Kelvin, it determines a dim glow of light, similar to candlelight. This CCT is used where ambient light is preferred.
- 2000-3000 Kelvin is the range in which a soft white light appears often yellowish in color. This CCT is often used for lighting the living room, dining room, bedrooms, etc.
- 3100-4500 Kelvin gives a bright white light that finds its uses in kitchens, offices, workspaces where task lighting is needed.
- 4600-6500 Kelvin is similar to daylight and is best for display areas and places where very bright illumination is required.
- Lighting with a CCT of more than 6500 Kelvin is a bright bluish hue of light and is best for places where very bright illumination is needed.
Now, that we have a fair understanding of ‘What LEDs are and their advantages over conventional lights’, we will now take you through the various types of tubes available.
THE BRIGHT WORLD OF T8 LED BULBS
T8 fixtures are indoor lighting appliances that are most commonly used in offices, homes, and other such places. These lights can replace traditional fluorescent tubes and work best with standard ceiling heights.
While making the decision of switching from fluorescent tubes to LED, you might get caught up in the nitty-gritty of T8 fixtures. At the worse, you may order a product that may not suit your needs.
Tube light fixtures (LED) come in various configurations, each with a specific set of profiles to fit into your old fluorescent fixture.
Let us now closely examine the different types of light tubes and understand how to pick one.
LED tubes are classified according to a variety of factors. Those factors are the size; Ballast Compatibility; the pin of the tube; the material of the tube’s encasing; the clarity of the tube’s encasing.
Various lengths serve different kinds of purposes. Primarily, these fixtures come in three different lengths, those are:
2 Foot LED Tubes: With a length of 2 feet, this fixture finds its application in smaller indoor spaces.
In this size, the lights come in 8 watts and can replace fluorescent tubes of 50-watt capacity.
4 Foot LED Tubes: This size of lighting fixture is appropriate for medium-sized rooms where high light output is needed in a smaller space. The tubes in this size offer three different wattages. 18 watt LED tube replaces a 40-watt fluorescent fixture. 20 watts LED light is a suitable replacement for 50 watts fluorescent light. 22 watt LED light replaces 60 watts fluorescent light.
8 Foot LED tubes: This size of tube light is ideal for installation in large halls and big rooms.
In this length, the tubes come in two different wattages: 40 watts LED replacing 100-watt fluorescent and 48 watts LED replacing 120-watt fluorescent.
LED lights primarily come in three different diameters. The notation of the diameter is T followed by the number. T stands for tube and the number is a division of 8 which gives the diameter in inches. For example, if you order a T8 tube, this would mean the diameter of the tube is 8/8 inch, i.e, one inch. Different sizes of diameters are:
- T5: This means that the diameter of the tube is ⅝ inches which is a thinner model as compared to the other two.
- T8: A T8 tube is the one with a diameter of one inch and is slightly thicker than T5.
- T12: A T12 tube is the one with a diameter of 1.5 inches and it is the thickest of all.
Ballast Compatibility: When switching from a traditional fluorescent tube to an LED-type, people often choose not to change the entire fixture.
The ballast regulates the need for high voltage to start the light tube. It also helps regulate the constant voltage to operate a fluorescent tube light. (refer to the upper section of this guide)
There exist three types of LED tubes based on the ballast compatibility. These are:
Type A: This type of tube light is compatible with the ballast and will function properly in the old fixture of your fluorescent tube.
- Type B: This type of LED light is not compatible with ballast and will either require the removal of the ballast from the wiring or will need a new fixture to operate.
- Type A+B: This type of hybrid tube can work with or without ballast and is universal when it comes to ballast compatibility.
Tubes differentiated by base:
Depending on the type of base available, LEDs are categorized into three different types. Those are:
Single pin (FAB): As the name suggests, the ends of this type of tube light have a single pin on both ends which connect with the fixture into the live and neutral wire.
Double pin (R17): This type of LED light has two pins on both ends which connect with the live and neutral end of the fixture.
Single-ended: This type of tube fixture has two pins but only on one end of the tube. The other end of the tube is only for support in such tubes.
Difference based on tube’s encasing:
These tubes come in two different materials covering the main LED strip. These are:
Glass: This type of LED tubes offer better heat dispensation and thermal handling then glass because glass has a higher temperature tolerance then plastic.
Plastic:Plastic or polycarbonate tubes have a distinct advantage of being rugged and have a better tolerance to breakage.
Difference based on the clarity of encasing: Based on clarity, there exist two types of tube fixtures in the market with each serving a different purpose.
Clear:A clear LED tube is almost 40% brighter than a frosted one with the same wattage. But the drawback of having a clear tube is that it is sometimes unappealing to look at. Clear tubes are suitable for use in tunnels and parking lots, where high luminous output is required.
Frosted: Frosted LED fixtures to have a coating on the encasing which makes them opaque. Thus, it allows dimming the light and making it softer and comfortable. The main areas where frosted tube lights come in use are offices, study rooms, and resting places.
Choosing the right tube lighting fixture is not an easy choice, but with the help of this guide, you have enough knowledge to shop for all the variety of LED tubes you want.
By writing this guide, we are hopeful that you won't waste time or money on something that won’t meet your lighting needs. So, if you wish, feel free to explore our collection of premium-quality LED lights!