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Glossary

  • LED - Light Emitting Diode (LED) is a device consisting of a semiconductor that emits light energy when an electrical current is passed through it. LEDs can be used for a wide range of lighting applications. It is predicted that LED lights are the future for energy-efficient home lighting.
  • IP Rating - IP, or Ingress Protection rating of an electrical product is a guide that is used to detail the strength of the enclosure that surrounds the electrical components. In the case of LED lights bulbs, the IP-rating measures the tolerance to the effect of dust particles and the level of protection against water or liquids. IP65 means that the LED bulb is totally protected against dust and can withstand low-pressure jets of water from all directions - with limited ingress acceptable.
  • GU10 - The Classic Mains Voltage GU10 twist fitting spotlight. Choose LED options for lower energy and longer lasting bulbs.
  • MR16 - spotlight bulb fitment type. Most MR16 lamps are operated using voltages lower than 120 volts, typically 12 volts. Some MR16 lamps, however, operate using 6 or 24 volts. An
  • LED Driver Transformer is needed to reduce the line voltage from 240 volts to the appropriate level for these lamps. Most low-voltage lamps have 2-pin bases.
  • LED Driver - An LED driver is an electrical device that regulates the power to an LED or string(s) of LEDs. What makes an LED driver different from conventional power supplies, is that an LED driver responds to the ever-changing needs of the LED, or circuit of LEDs, by supplying a constant current to the LED, as its electrical properties change with temperature. The power level of the LED is maintained constant by the driver as the electrical properties change throughout the temperature increases and decreases seen by the LED(s). Without the proper driver, the LED may become too hot and become unstable, causing poor performance or complete failure
  • COB - ‘Chips on Board’, is a new technology of LED packaging for the LED light engine. Multi LED chips are packaged together as one lighting module. Compared to traditional lighting such as a fluorescent lamp, COB LED is super bright for its small size. When COB LED lighting is used, it looks like a minature lighting panel often used within spotlights or LED floodlights. COB LED lgihts are multi chips packaged togehter which it can increse the light emitting are by 10 times in comparison to other types of LED lighting.
  • SMD LED - A type of LED module called ‘Surface Mounted Diode’, used mount LED chips on printed circuit boards (PCB). It is a self-contained Surface-Mount LED device designed either to function on its own or to plug into a compatible unit
  • CFL- A ‘compact fluorescent lamp’, also called compact fluorescent light, energy-saving light, and compact fluorescent tube, is a small fluorescent light fitting designed to replace an incandescent lamp. Most CFL’s are designed to have fitment types compatible with fixtures formerly used for incandescent lamps.
  • T5 fluorescent - T5 (16mm diameter) is a thin fluorescent tube light normally combined with a high frequency ballast which uses less electricity than standard T8 (25mm diameter) or T12 (38mm diameter) diameter tube lights
  • Kwh or Kwhr - Kilowatt hour of electricity consumption. One Kwh is 1000 watts of electricity used for one hour. For one Kwh you can typically, watch TV for 7 hours, do one washing machine or dishwasher cycle, or use a desktop computer for 4 hours. One kilowatt hour is between 14 and 15 pence on average (UK 2014)
  • R-value- This is a measure of thermal resistance used in the building and construction industry, more commonly used in America where U-values are used in europe. The higher R-value figure the better the insulation properties. The lower the R-value the higher the heat conduction. The total thermal resistance of a construction is the sum of all ther thermal resistances in the construction. A higher R-value is acheived by using a thick insulation material. An example R-values through a roof might include internal surface resistace R 0.10; 12mm plasterboard R 0.06; 150mm of mineral wool insulation R 3.75; roof air space thermal resistance R 0.2; external surface resistance R 0.04 which totals 4.15
  • U-value - A U value is a measure of heat loss. It is expressed in W/m2k, and shows the amount of heat lost in watts (W) per square metre of material (for example wall, roof, floor etc.) when the temperature (k) outside is at least one degree lower. The lower the u value, the better the insulation provided by the material. The U value is defined as being reciprocal of all the resistances of the materials found in the building element, so in the R-value example above, the U value is 1 divided by 4.15 which equals a U-value 0.24
  • LED Panel light - A circular or square LED ceiling light where the LED’s are normally concealed behind an opaque panel.
  • LED Tube light - Commonly used for the replacement of fluorescent tube lights. LED lights can used 40-60% less electricity than traditional fluorescent lighting. LED are usually mounted on to a PCB strip within the tube and include an LED power supply driver concealed within the fitting.
  • PIR Sensor - Passive Infra-red sensor. This is an electronic sensor which is able to detect movement of a warm object, typically a person or an amimal. Common used with occupancy sensor light switches or security lighting to enable lighting to automatically turn on an off.
  • Photocell switch - A photocell is a light sensitive electronic component. A photocell switch is used to turn light on when is goes dark and off again at dawn.
  • Biomass - Biomass is biological material derived from living, or recently living organisms. In the context of biomass for energy this is often used to mean plant based material, but biomass can equally apply to both animal and vegetable derived material.
  • PV Solar - Solar panel electricity systems, also known as solar photovoltaics (PV), capture the sun's energy using photovoltaic cells normally made for layers of crystalline silicone. These cells don't need direct sunlight to work – they can still generate some electricity on a cloudy day. The cells convert the sunlight into electricity, which can be used to run household appliances and lighting.
  • Day white - 6000 kelvin colour temperature.
  • Kelvin - Color temperature is a characteristic of visible light and is stated in units of absolute temperature, known as Kelvin (K)

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