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Why change to LED lighting?

With ultra-low energy consumption, high quality light output and lifetimes of up to 50 times greater than traditional light bulbs, LED lighting is the future of lighting. With models of LED light bulbs already available that are comparable to traditional halogen bulbs, there has never been a better time to switch to LED lighting, especially with increasing electricity prices.
 
The Economic advantages - Long Life and Efficiency

The long lifetime of LED light bulbs, up to 50,000 hours, means that in most applications LED light bulbs are maintenance free. Replacement lamp costs are also lower since only one bulb per 50,000 hours is required. If LED light bulbs are replacing bulbs such as halogen spotlights one LED light bulb can last as long as 50 halogen bulbs. LED light bulbs are an extremely safe form of lighting, typically requiring low voltages and emitting little heat in the direction of illumination.
Architectural and Design advantages - The Quality of light

Coloured lighting can be produced much more efficiently by LEDs than traditional lighting. LED light bulbs also provide a much richer and consistent colour given their narrow wavelength and there is greater scope for colour mixing. The compact size of LED light bulbs and therefore the size of the luminaires is particularly useful for accent lighting and effects. Coupled with coloured lighting, the scope for attractive design is large. Large reflectors can be dispensed with, making LED luminaires highly versatile. Since LEDs have no UV or IR in their spectrum, delicate and sensitive objects such as food or artifacts can be lit at close range and are not put under any stress. It is theoretically possible to dim LEDs from 0 to 100% and the colour can be controlled easily, giving precise control over the intensity and composition of the light. Instant start up means switching is smooth. Unlike CFL or fluorescent lighting, LED lighting does not flicker, reducing eye strain and other problems for those with photo-reactive illnesses. Physically strong, LEDs are durable against both impact and vibration meaning LED light bulbs can be used in hazardous, hostile and challenging environments.
Enviromental Advantages

The low energy use of LEDs means that highly efficient lighting solutions can be developed to replace existing, inefficient lighting. The longevity of LED light bulbs means that fewer lamps are required or need to be disposed of. LEDs don't contain hazardous Mercury Vapour like unrecyclable Compact Fluorescent Tubes (C.F.L.s)
Guide to choosing the right lighting for your application

There are a number of different types of GU10 LED light bulbs on the market, often with very different characteristics. LEDs differ from traditional light bulbs in that it can be difficult to tell the brightness of a particular bulb just from the wattage. A good LED will have a balance between lifetime and brightness. Some bulbs may appear to be more powerful as they have a higher wattage, but superior LED light bulbs will have a higher lumen output, often at a lower wattage, meaning they are more efficient. Another way of separating good LED bulbs from lesser quality ones is the lifetime. Look for long-life LED light bulbs - we stock bulbs with a lifetime up to 50,000 hours. Although LED light bulbs may seem expensive, they last 50 times as long as regular halogen bulbs. Once the cost of replacing halogen bulbs is taken into account, LED bulbs really are the ultimate energy saving bulb. Again, not all LED light bulbs are created equal. Whereas some LED light bulbs last for 15,000 hours, the better light bulbs will have lifetimes of 40-50,000 hours, saving you more money. Stay Safe as many cheaper imported LED light bulbs do not comply with European CE and RoHS directives. Always look for the CE and RoHS marks. Even in the event of a fault, they remain safe, whether used in high or low-power applications.


Rough guide to choosing the right colour/mood for your application.

Colour Temperature Very Warm White Warm White Neutral White Cool White Soft Daylight Daylight
Kelvin 2700K 3000K 3500K 4000K 5000K 6500K
Moods and Effects Friendly, Personal, Intimate Soft, Warm, Pleasing Light Friendly, Inviting, Non-threatening Neat, Clean, Efficient Bright, Alert Bright, Cool
Applications Homes, Libraries, Restuarants Homes, Hotel Rooms, Lobbies, Restuarants, Retail Stores Executive Offices, Public Reception Areas, Supermarkets Offices, Classrooms, Mass-merchandisers, Showrooms Graphics Industry, Hospitals Jewellery Stores, Beauty Salons, Galleries, Museums


Rough guide to I.P. numbers

What is an IP number and why is it used?

LED lights and transformers may be given a number to signify its protection against solids and/or liquids. This rating is known as 'Ingress Protection' and appears as 'IP' followed by 2 or 3 digits.
The first digit of the rating indicates the level of protection against solid objects accessing harmful parts and the degree that equipment is protected against these foreign bodies, such as tools, dust or fingers.
The second digit indicates the level of protection from moisture. Occasionally a number is omitted and replaced with an 'x'. This means it has not been tested or testing is not relevant. The higher the number, the better the protection. If a piece of equipment does not have an IP number it must not be used in bathroom zones 0, 1 or 2, or anywhere else with a wet or damp environment.


First number
(Solid objects)
Definition

Second number
(Liquids)

Definition
0 No Protection 0 No protection
1 Protected against solid objects over 50mm (e.g. touch by hands) 1 Protected against vertically falling drops of water
2 Protected against solid objects over 12mm (e.g. fingers) 2 Protected against direct sprays up to 15° from the vertical
3 Protected against solid objects over 2.5mm (e.g. tools and wires) 3 Protected against direct sprays up to 60° from the vertical
4 Protected against solid objects over 1mm (e.g. tools and small wires) 4 Protected against sprays from all directions - limited ingress permitted
5 Protected against dust - limited ingress (no harmful deposit) 5 Protected against low pressure jets of water from all directions - limited ingress permitted
6 Totally protected against dust 6 Protected against strong jets of water e.g. for use on ship decks - limited ingress permitted
    7 Protected against the effects of temporary immersion between 15cm and 1m. Duration of test 30 mins
    8 Protected against long periods of immersion under pressure

Bathroom Zones


For the purposes of installing electrical equipment, a bathroom is divided into zones. The criteria for each zone are based on the risk of electric shock. The zones relate to the IP rating of products and where they can be safely installed.


Zone 0 Interior of the bath or shower that can hold water. Requires electrical products to be low voltage (max 12V) and rated IPX7.
Zone 1
 
Area directly above zone 0, limited to a height of 2.25m above the bath or shower. Requires electrical products to have an IPX4 or better. Products should use safety extra low voltage (SELV) with the transformer located in zone 3 or beyond.
Zone 2
 
Area beyond zones 0 and 1, stretching 0.6m horizontally and up to 2.25m vertically. Also includes the recessed area of a window with a sill next to the bath. Requires electrical products to have an IPX4 or better. SELV with the transformer located in zone 3 or beyond.
Zone 3
 
Area beyond zone 2, stretching 2.4m horizontally and up to 2.25m vertically. There is not a specified IP number for this zone, although some products are marked as not for bathroom use. SELV or shaver units are permitted, all other portable electrical equipment is not.
 
All electrical work in a bathroom must be carried out by a qualified electrician, if you have questions in relation to bathroom lighting that are specific to your situation we strongly advise you contact a professional for further advice.
 
 
Some LED Lamps are Dimmable. If a lamp isn't specifically described as Dimmable, presume it isn't.
Non-Dimmable lamps should NEVER be included within a circuit where a Dimmer or Electronic Timer (inc P.I.R.) is present.
Should you fit a dimmer to non-dimmable LED's then damage to the dimmer, lamps or both will occur.
Trailing or Leading Edge Dimmers are best suited to dimming LEDS effectively. A resistive load can be added to eliminate lamp instability and flicker when dimming non-resistive loads such as mains powered Dimmable LED lamps or Dimmable drivers.

Here at BrightOn LED lighting we always recommend using dedicated LED drivers for Low Voltage applications to ensure full performance and life of your lamps. Because LEDs are so efficient they often fall below the minimum rating of older Halogen type Transformers.
NEVER connect more than the drivers maximum rated load to an LED Driver. We recommend leaving at least 10% 'headroom', so connect 1 x 10 Watt low voltage lamp to a 12 Watt LED driver or 2 x 7 Watt to a 16 Watt driver, etc.

 
Reference Documents
 



This Document is purely advisory and the information given is to the best of our knowledge but without responsibility.

 

 

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