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LED Light Bulbs
LED Light Fittings
Ledvance Parathom PAR16 4.3W LED GU10 Very Warm White 120 Degrees
Girard Sudron LED Filament Golfball 4W E14 Gold Ultra Warm White Dimmable
Crompton LED Strip 284mm 6W Cool White Opal
LED Fixed Fire Rated Downlight 5W 3000K IP65 60Deg White
Ledvance LED Floodlight 20W 2200lm Warm White IP65 Black with Sensor
Calex LED Retro Pendant with Ceiling Plate 5 x E40 2m Wire Black
Guide to LED Light Bulbs.
When choosing an Led Light Bulb you should be aware that there are huge differences in efficacy (power to produce the desired effect) between LED lamps of different manufacture. The EU has introduced regulations to ensure that fair comparisons are made between lamps of different origin, these regulations are called DIMM2. Many high profile suppliers of "unbranded" led lamps are making bogus claims about the equivalence values of their lamps. Nearly all of the lamps we supply are main brand products and the equivalences are in accordance with the Dimm2 regulations. We recommend that you only buy led lamps made by a company you recognise.
The brightness of a lamp is measured in "Lumens", this applies to all lamp types and not just led bulbs. So why are the equivalence values not equal to the lumens for different lamps types? The base standard is how many lumens an old fashioned light bulb produces. So, if we say that this traditional bulb produces 800 lumens, it means an LED has to produce more than 800 lumens to have the same equivalence value. This is because an led bulb lasts a very long time and over its life, it is expected that the light level will fall. Therefore the LED has to start out brighter to average the same light level.
The colour temperature of a lamp is a measure of the warmth (orangeness) to coldness (blueishness) of the light the bulb produces. An ordinary light bulb will have a colour of below 2700K, so in most household use we recommend 2700K or "Very Warm White" as we call it. Halogen lamps are typically 3000K so slightly whiter and this colour we call "Warm White". "Cool White" is like the colour of photocopier paper 4000K and "Daylight" is quite blue and typically this will be anything above 5000K.
There are now many dimmable LED bulbs and main brand types will dim smoothly. If you are experiencing problems when dimming a main brand LED, you are likely to have a compatibility issue with your dimmer or transformer. There are lots of factors that can affect the installation, including the number of lamps on the circuit, and the quality and rating of the dimmer and transformer. In most cases we can sort out the problem but if you intend to use your lamps on a dimmer, it may be worth talking to one of our sales team for advice.
There are a number of cheap lamps on the market. Many of these are using older generation chips and these are fraught with problems. This includes electrical safety, radio interference, short life and overheating. Most cheap lamps seem initially to work fine but because they are using inefficient chips, the chips are over run to make them bright, resulting in short life. Good lamps cost more and will last a very long time, your eyesight and safety is important.
Red Lion Road Business Park
UK, KT6 7QD
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TEL: (+44) 20 8391 7400