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Abbreviations and Acronyms in Lighting

AC: Alternating Current

AR: Aluminium Reflector

BC: Bayonet Cap

CCT: Colour Correlated Temperature

CD: Candela

CRC Scheme: Carbon Reduction Commitment Energy Efficiency Scheme

CRI: Colour Rendering Index

DALI: Digital Addressable Lighting Interface

DC: Direct Current

EEI: Energy Efficienct Index

EPC: Energy Performance Certificate

ErP: Energy related Products

ES: Edison Screw

GHG: Greenhouse Gas

GLS: General Lighting Service

HID: High Intensity Discharge

IEC: International Electrotechnical Commission

IES: Illuminating Engineering Society

IRC: Infra-red Coating

K: Kelvin

LCP: Light Circuit Power

LED: Light Emitting Diode(s)

LOR: Light Output Radio

LM: Lumens

LX: Lux

MR: Multifaceted Reflector

PAR: Parabolic Aluminised Reflector

PIR: Passive Infra-red

SSL: Solid State Lighting

V: Volt

VA: Volt-Ampere

W: Watts


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