TL T8

Why switch to a T8 LED tube?

The transition from traditional T8 fluorescent tubes to LED variants is driven by several advantages in terms of efficiency, lifespan, and environmental impact. Since the European Union is gradually phasing out the production and import of traditional T8 and T5 fluorescent tubes, the availability of these conventional light sources has become limited. Switching to LED is therefore a practical and future-proof choice.

These advantages not only lead to a lower energy bill but also mean less hassle with maintenance and replacements. Additionally, the absence of mercury ensures cleaner disposal after end-of-life.

Choosing the right T8 LED tube

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

Find the appropriate length and replacement wattage

T8 fluorescent tubes are available in standard lengths, with each length corresponding to a specific wattage. When making the switch to LED, it is important to choose an LED tube with the correct length and a matching light output to replace your old fluorescent tube.

The exact lumen output may vary between brands and models. Always check the product information for the exact lumen value to ensure the light intensity meets the requirements of your space.

Important technical specifications

• Luminous output (Lumen): The lumen value (lm) indicates how bright a lamp actually is. The higher the lumen count, the more light the tube emits. For workspaces, a higher lumen value is often desirable, whereas corridors or storage areas can suffice with fewer lumens.
• Light color (Kelvin): Expressed in Kelvin (K), this determines the color temperature of the light. Common color temperatures include:
  • 2700K - 3000K: Warm white, suitable for atmospheric areas such as canteens or waiting rooms.
  • 4000K: Cool white, a neutral tone often used in offices, schools, and shops for an active environment.
  • 6000K - 6500K: Daylight white, for spaces where maximum visibility is required, such as warehouses or garages.
• Color Rendering Index (CRI): This value indicates how accurately colors are rendered under the lamp's light. A CRI of 80 or higher (8xx series) is generally sufficient for most applications, while spaces where color accuracy is crucial (such as print shops or showrooms) benefit from a CRI of 90 or higher (9xx series).
• Dimmability: Not all T8 LED tubes are dimmable. If dimming is required for flexible lighting or extra energy savings, be sure to choose a dimmable LED T8 tube and ensure you have a compatible LED dimmer.

Installing a T8 LED tube

Installing a T8 LED tube is generally simple, but the procedure may differ depending on the type of ballast in your existing fixture. Two common situations apply:

Installation with a conventional ballast (EM)

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

1. Switch off power 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. Restore power and check operation.

Installation with electronic ballast (HF) or direct mains connection

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

When modifying wiring or if you're unsure about the installation, it is advisable to consult a qualified electrician to ensure safety and correct operation.

Frequently Asked Questions about T8 LED tubes

Alternatives to T8 fluorescent tubes

In addition to direct replacement with T8 LED tubes, there are various other LED lighting solutions that can offer suitable alternatives depending on your application and the desired look:

• Integrated LED batten fixtures: These are complete luminaires with built-in LED technology, often slimmer and easier to install than traditional fluorescent fixtures. Available in various lengths and lumen outputs, they are a popular solution for garages, warehouses, and workshops.
• LED panels: These flat, square or rectangular luminaires are a common alternative to fluorescent lighting in suspended ceilings, especially in offices and schools. They offer uniform, even light distribution and are available in various color temperatures and UGR ratings.
• LED high bays: For spaces with high ceilings, such as warehouses and industrial halls, LED high bays provide an energy-efficient solution delivering powerful, focused lighting. They often replace traditional gas discharge lamps.

Choosing the right lighting solution depends on your project’s specific requirements, existing infrastructure, and desired lighting effect. The switch to LED always offers significant long-term benefits.