The colour of a lamp is defined as a measurement called kelvins. A standard GLS light bulb in your house would be 2,700 kelvins which is in the warm colour spectrum and a lamp with 6,000 kelvins would be at the very cold white spectrum. Getting the right colour temperature of a lamp does matter as the warm colour wavelength helps to soften skin tones and gives a warm soft relaxed feel and at the other end of the scale a 4,000 to 6,000 kelvin lamp colour would be used in offices or a fast food restaurants to make you feel less comfortable and relaxed and more alert. There’s nothing that can sour your opinion of a compact fluorescent or LED lamp like buying a 4000K or 5000K bulb when you meant to buy a 2700K bulb, or vice-versa. When you buy a new, energy efficient bulb, keep your application and colour scheme in mind and make sure to buy the bulb with a colour temperature to match.
The amount of light that is produced by a lamp is called lumens and the more lumens the lamp has the brighter it will be. Lumens work in conjunction with kelvins and should not be taken in isolation of each other, for example if you had a very warm white lamp at 2,700 kelvins and it produced 300 lumens and you then had another lamp which was a cool white 6,000 kelvins which also produced 300 lumens the cooler lamp colour would always appear brighter to the naked eye than the warmer one this is due to the receptors in the eye that react better to a white light spectrum. Another factor on how bright a light may appear is contrast so if you shine a white 6,000 kelvin light on to a dark wall and a warm 2,700 kelvin lamp on to a white wall the warmer lamp would appear brighter due to the contrast of the material it is focused on. So when choosing a lamp always take in to account the area you want to illuminate and think about Kelvins ( colour ), Lumens ( brightness) and contrast ( colour of area )
Choosing the style of a product is only part of the equation you must also think
of where that product will be used and how it will be installed. All exterior lighting
products on our web site have a IP rating which is explained further in our design
ideas section but in simple terms the IP rating is appropriate to each light fitting
and its intended application and is therefore fit for purpose. Water ingress is the
enemy for outdoor lighting and the products supplied are only as good as the installation
as the weakest point is always cable and transformer joints. All joint must be made
100% water tight and this can be done using heat shrink kits, waterproof junction
boxes which are then filled with a resin mix. All joints where possible should be
made above ground for easy access and reduced water ingress. When installing ground
buried lights adequate drainage systems should be put in place especially in clay
based soil areas. If possible use ground surface spike lights rather than a buried
light. Mains 240v cable will have less joint than a low voltage installation
but care must be taken with the cable runs.
Care should be taken for the environment and local wildlife to maintain the ecological balance. Insects, bats, wildlife can all be effected by light pollution. The warmer colour spectrum of ( 2,700 Kelvins ) does not interfere with insects and general wildlife as much as the blue colour spectrum of light around 6,000 kelvins which can disrupt their normal night time activity. This also applies to bats where a anti glare light fittings works better as well as reducing the overall light pollution in the area. You must also be mindful of your neighbours and the effect your lighting can have on them and shining a 500w tungsten halogen flood light in to their windows at night will cause them distress. Try to keep the light in a downward position and local to the items you want to illuminate and even if you want to illuminate tall trees it can be done in a sympathetic way by placing a ground buried or surface spike flood light directly under the trees to illuminate the canopy. Some light fittings also have a anti glare shield fitted to reduce light pollution.
All the luminaries on our web site have been specifically designed fit for purpose and assigned a relevant IP rating which denotes the amount of protection that is required from water and dust. More information on IP ratings can be found in the design ideas section on this web site.
Light levels are measured in something called LUX. Put simply LUX is a measurement of light falling on a given surface area. For example an average LUX of 200 would be needed for an outdoor tennis court for recreational purposes and a side street walkway would have an average of 5 LUX. To calculate lux levels you need a very good calculator or computer as there is a number of factors that need to be taken in to account.
Sunny June day 80000 Lux
Bad light stopped play at Lords 1000 Lux
A well lit office 500 Lux
Main road lighting 15 Lux
A residential side street 5 Lux
A clear moonlit night 0.2 Lux
|Lamp base:||GU10 51mm|
|Lamp description:||2 x 4.5w Max|
|Overall diameter:||7 cm|
|IP rating:||IP 44|
|Degree of tilt:||45|
|Head Choice:||Twin adjustable lamps|