T8 Tubes

Why switch to a T8 LED tube?

The transition from traditional T8 fluorescent lamps to LED versions is driven by various advantages in efficiency, lifespan, and environmental impact. Since the European Union is gradually phasing out the production and import of traditional T8 and T5 fluorescent lamps, the availability of these conventional light sources is limited. Therefore, switching to LED is a practical and future-proof choice.

These advantages not only lead to a lower energy bill but also reduce the hassle of maintenance and replacement. Furthermore, the absence of mercury contributes to cleaner disposal at the end of its life.

Choosing the right T8 LED tube

When replacing your existing fluorescent installation with T8 LED tubes, there are several aspects to consider. This ensures that the new lighting performs optimally in the intended environment and is compatible with your current fixtures.

Find the right length and replacement wattage

T8 fluorescent lamps are available in standard lengths, with each length linked to a specific wattage. When switching to LED, it is important to choose an LED tube that has the correct length and thus replaces the corresponding light output of your old fluorescent lamp.

The exact Lumen (light output) can vary between brands and models. Always check the product information for the exact Lumen value to determine if the brightness meets the requirements of the space.

Important technical specifications

• Light Output (Lumen): The Lumen value (lm) indicates how bright a lamp actually is. The higher the Lumen count, the more light the tube emits. A higher Lumen value is often desired for workspaces, while a lower Lumen value is sufficient for hallways or storage areas.
• Light Colour (Kelvin): Expressed in Kelvin (K), this determines the colour temperature of the light. Common light colours are:
  • 2700K - 3000K: Warm white, suitable for atmospheric spaces like canteens or waiting rooms.
  • 4000K: Cool white, a neutral light colour widely used in offices, schools, and shops for an active environment.
  • 6000K - 6500K: Daylight white, for environments requiring maximum visibility, such as warehouses or garages.
• Colour Rendering Index (CRI): This value indicates how true-to-life colours are rendered under the lamp's light. A CRI of 80 or higher (8xx series) is generally sufficient for general applications, while for spaces where colour accuracy is crucial (e.g., printing houses or showrooms), a CRI of 90 or higher (9xx series) is recommended.
• Dimmability: Not all T8 LED tubes are dimmable. If dimming is a requirement for flexible light settings or extra energy savings, make sure you select a dimmable T8 LED tube. Note that a suitable LED dimmer is often required.

Installing a T8 LED tube

The installation of a T8 LED tube is generally simple, but the procedure can vary depending on the type of ballast in your existing fixture. Two common situations apply:

Installing with a conventional ballast (EM)

If your current fluorescent fixture has a starter, it works with a conventional (electromagnetic, EM) ballast. Most 'EM/Mains' compatible T8 LED tubes come with a special LED starter. The steps are as follows:

1. Switch off the power supply to the fixture for safety.
2. Remove the old fluorescent tube.
3. Remove the existing starter from the fixture.
4. Insert the supplied LED starter into the starter holder.
5. Insert the new T8 LED tube into the fixture.
6. Switch the power back on and check if it works.

Installing with an electronic ballast (HF) or directly on mains power

Fixtures with an electronic ballast (HF) do not have a separate starter. For these fixtures, you need an 'HF-compatible' T8 LED tube. Installation is often similar to the EM version but without the need for a starter. Some T8 LED tubes can also be connected directly to the mains voltage (230V), without a ballast. These 'Mains' or 'Direct' tubes require a modification of the wiring in the fixture, where the ballast is bypassed or removed. This further increases efficiency and eliminates a potential point of failure.

When modifying wiring or in case of doubt about the installation, it is advisable to consult a qualified electrician to ensure safety and correct operation.

Frequently asked questions about T8 LED lighting

Alternatives to T8 fluorescent tubes

Besides direct replacement with T8 LED tubes, there are several other LED lighting solutions that can be suitable alternatives, depending on the application and the desired look:

• Integrated LED fixtures (Battens): These are complete fixtures with built-in LED technology, often slimmer and easier to install than traditional fluorescent fixtures. They are available in various lengths and light intensities and are a common solution for garages, warehouses, and workshops.
• LED panels: These flat, square, or rectangular fixtures are a common alternative to fluorescent lighting in suspended ceilings, especially in offices and schools. They provide uniform, even light distribution and are available with different colour temperatures and UGR values.
• LED high bays: For spaces with high ceilings, such as warehouses and industrial halls, LED high bays are an energy-efficient solution that provides powerful and focused lighting. They often replace traditional gas-discharge lamps.

Choosing the right lighting solution depends on the specific requirements of your project, the existing infrastructure, and the desired light effect. In all cases, the switch to LED offers significant long-term benefits.