The necessary light depends on the activity that is performed in a particular place, and is easier to express it in lumens per square meter (or 'Lux' value).
Where people read or do detailed work, such as in an office or in a kitchen, one should have between 400-500 lux. In a hall, bathroom, etc 250-300 lux could do.
Based on this data, we have to calculate the necessary light: necessary light value in lumens = area space x required light value in LUX.
On each lamp is stated how much lumen it gives. If we know how many lumens we need, we can divide this value by the lumen value that the chosen lamp gives, and so we get the number of necessary lamps.
Ex: I would like to place LED tubes of 18W and 1.2m long in my garage, where I want to do repairs, so I have to be able to see clearly. The garage is 8m long at 5m wide.
Calculation: Because I have to be able to see well, I choose 450 lux value. The surface of the garage is 8m x 5m = 40m2. The total required light in lumens will be 450 lux x 40m2 = 18,000 lumens. When I look at the lumen value of the chosen LED tube, I see in the specifications that such a tube gives 2018 lumen. Now I can calculate how many tubes I need: 18,000 / 2,018 = 9, so I have to hang 9 LED tubes of 1.2m.
This calculation is not 100% correct because we do not take into account the color of the walls, ceiling, windows etc, but is good enough to give a reasonable idea.
Why is LED-lighting more economical than halogen or other lamps?
A conventional bulb converts only 2 to 3 % of its used energy into light, 97-98% is heat, and in terms of efficiency you can not score worse.
LED lighting provides approximately 8-10 times more light for the same used electricity.
How many hours will work a LED-lichting lamp?
LED lamps function between 30,000 and 50,000 hours.
If you let the lamp on for 6 hours on average every day, we talk about a life span of 14 to 22 years! That is many times longer than with conventional lighting, halogen lamps or even the energy-saving lamps.
Which types of LED's exist?
You have LED in all sizes and shapes: DIP, SMD, High Power, COB, SCOB and filament.
The LED spotlights and lamps offered in the EXTRAS! action for the Luminus customers are all produced with the latest LED technology. The E14 and E27 LED lamps are equipped with LED filament technology. The GU10 and MR16 spots have a COB LED. The spotlights and T8 LED tubes use SMD LEDs, D-LED's.
Can I replace each and any lamp with a LED-lamp?
Basically, for every lamp (incandescent, halogen spot, energy saving lamp) used in a modern house, there is a LED version.
Most LED variants have undergone an enormous evolution in recent years, so that the LED alternative has the same light intensity and light color as your known, 'old' lamps.
Can I install the LED lights myself or I sould beter use a qualified electrician?
LED lighting is not difficult to install and everyone can do it: you remove the old lamp and replace it with the new LED lamp.
If you have dimmers or transformers, then the installation is a bit more complicated and it is sometimes a good idea to be assisted by a qualified person.
Is LED lighting dimmable?
Some LED lamps are not dimmable, others do.
All QALEDO LED lamps with E14, E27, GU10 or MR16 feet are dimmable.
The dimmable LED lamp does not work with my 'old' dimmer. Why?
Older dimmers can not dim the LED lamps, mostly because they need a certain load, and the LED lamps sometimes fall below that value due to low consumption. To be sure, when people choose a dimmer, always have to look if the dimmer is suitable or not for LED lamps. There are also many low quality dimmers on the market, and they work less stable (for example, the lamp flickers at certain levels). Our lamps have been tested with the Niko and Eltako LED dimmers. Moreover, we also have 2 dimmers of own production in our range:
- a cable dimmer
- a dimmer with remote control
Does a LED-lamp get warm?
The warmth created by a LED is very low, you can almost always grab a burning LED lamp without having pain.
My light flashes or stays on when my switch is off; what can I do?
The flashing or permanent light is most likely caused by an induction voltage on the wiring (a" mini-current "is generated because, for example, wires are too close to each other).
That is not dangerous in itself, but obviously annoying with LED. In the case of halogen lamps, that voltage will also have been there, but as they need a much larger capacity to burn, they will not light up quickly an the issue is not visible. LED lights are already on and functioning with 1W. The induction voltage disappears when you install a bipolar light switch. In every case, if the lamp does not go off with the switch, there is a fault in your electrical installation.
Are the LED lamps from this EXTRAS! action for Luminus customers waterproof?
The waterproof factor of a product is indicated by an IP code which is clearly indicated on each product description area.
The flood lights can be used perfectly outside (IP 65). The tubes, spots and lamps are for indoor use (IP 20).
Can I get government subsidies for the LEDs?
Subsidies for energy-efficient LED lighting depend on each region and whether you are a private individual or a company. Please contact the technical department of your municipality or the grid supplier for information.
Can I also use LED lamps in a humid environment such as the bathroom?
There are special rules for lighting in a bathroom. Some of our products are suitable for bathrooms, such as our downlights.
In the bathroom you will prefer 12V lighting. The 12V spots (MR16) can serve this perfectly. Please note: these spots should be used in a waterproof fixture in places where there is a lot of moisture or water (eg directly above the shower).
Which are the main advantages of the LED-lamps?
1. Low consumption
LED lighting uses about 80% to 90% less than incandescent and halogen lamps. On average, you have earned back the purchase costs after 1-2 years. Everything that follows is pure profit!
2. Up to 50,000 working hours
LED lamps work from 30,000 to 50,000 hours. That is 5 times longer than a low-energy light bulb and 20 times longer than a light bulb.
3. No warm-up time
LED lighting works immediately at full power. So you do not have to wait for a while before the lamp performs optimally, as with a CFL.
4. Safer
You can not touch a light bulb without being burned. LED develops considerably less heat and that makes it much safer in terms of fire risk and children playing.
5. Simple alternative
LED lamps and spotlights are available in all standard fittings (GU10, MR16, E27, E14, ...). You only need to remove your old lamp from the fixture and turn the new LED on!
6. Environmentally friendly
In addition to the lower energy consumption, the components of an LED lamp are easily recyclable.
7. Beautiful light
Available in all conceivable shades: from natural white and warm white to multi-colored. You no longer notice the difference between a light bulb and a new efficient LED lamp!
Are the LED-lamps more efficient than the energy saving lamps?
LED lamps are more efficient than energy-saving lamps and more than five times more energy-efficient than a conventional light bulb.
An advantage of the LED lamp is that it does not need a start-up time, where an energy-saving lamp usually needs to burn at full power. In addition, LED lamps are dimmable, which is not the case for energy-saving lamps in most cases.
Finally, LED lamps are also more resistant to winter cold. That is why LED lamps can be used better in the garden than energy-saving lamps. This way it is also possible to save energy in the garden.
LED lamps are more expensive, but they last longer than energy-saving lamps. A low-energy light bulb lasts about 10,000 hours on average. LED lamps last for 30,000 to 50,000 hours.
My dimmer does not work anymore after I installed my LED. Why?
This has to do with the minimum load: LED lamps and spotlights consume considerably less than traditional lighting.
If you want to keep your current dimmer, look carefully at this dimmer's minimum power. That is the minimum load required for the dimmer to work properly. The minimum power is different for each dimmer.
Suppose it is 45W, for example, you will have to connect 10 LED spots of 4.5W. If you do not install enough power on your dimmer, it may not work at all or will not work optimally.
I replace my conventional lamps one after the other, when they stop working. Is this the best way to replace them?
That is possible, but that is actually not the best way.
Keep in mind that even if halogen / incandescent bulbs do not break, they consume up to 90% more than the LED alternative. So even if the LEDlamp is more expensive, you get that extra price back.
In addition, low-energy light bulbs on the same circuit sometimes generate power surges, which can cause your LED lights to break.
Finally, there is the view and the unconscious processing of the light. The same light sources, with the same light colors, give your eyes a rest and provide less stress.
What does the 'lumen' value marked on the LED lamp mean?
Lumen = unit of luminous flux.
Lumen is one of the most important criteria for comparing lamps with each other.
The luminous flux is a measure of the total amount of visible radiation that is emitted per second. The human eye catches certain wavelengths (colors) better than others. For example, we see green and yellow much better than ultraviolet and infrared. Lumen is a good comparative factor, because with the same wattage there can be a big difference in the perception of different shades. So look for an optimal combination of 'lumens per watt'.
How many times can a LED-lamp be switched on and off?
An LED lamp has an average of 1 million switching cycles or even more. Especially the low-energy light bulbs can not always switch on and off frequently.
Can I install a LED lamp behind a presence sensor?
Since LED lamps do not suffer from negative turning on and off, even shortly after each other, they are particularly suitable for placing behind a presence sensor. In addition, they give light immediately at full power, which is an advantage for these types of applications.
We offer different products with an integrated sensor.
What is the energy category of the LED lamps?
All the LED lamps belong to the A+ category and higher.
Why are the LED lamps more expensive than conventional lamps?
LEDs have been around for a long time: since 1962, but the use of LEDs in general lighting is still fairly new.
For LEDs with a high light output, complex manufacturing processes are required. That explains the higher price.
Is there a big difference between a conventional light bulb and a LED light?
The difference between an incandescent lamp and a LED lamp is very small, especially the LED filament lamps with vertical LED wires give almost the same warm white light as a conventional light bulb.
LED lamps must have 2700 Kelvin (and lower) when the color temperature is meant to match the warm white of the conventional light bulb.
My dimmer buzzes with the LED, is that normal?
Every dimmer buzzes or hums a bit, that is typical for a dimmer, but if the dimmer buzzes remarcably loud, something may be wrong.
Check whether:
- your dimmer is compatible with the light source (eg phase connection vs phase cut-off);
- your lamps are indeed dimmable;
- make the lamps good contact with the fitting?
