Glossary of Abbreviations

Here are some of the most common abbreviations CURRENTLY used in the electrical industry:

°: Degrees
ø: Diameter
“: Inches
A: Amp
ABS: Acrylonitrile Butadiene Styrene
AC: Alternating Current
AFCI: Arc Fault Circuit Interruptor
AWG: American Wire Gauge
BC: Bayonet Cap
BR: Bulged Reflector
BZP: Bright Zinc Plated
CAT: Category
CCA: Copper Clad Aluminium
CCS: Common Channel Signalling
CCT: Correlated Colour Temperature
CCTV: Closed Circuit Television
CDM: Ceramic Discharge Metal-Halide
(tv socket) CED:
CE: Certified to European Standard
CEC: California Energy Commission
CEL-PE: Cellular Polyethylene
CFL: Compact Fluorescent Lamp
CM: Centimetres
CMOS: Complementary Metal Oxide Semiconductor
CO: Carbon Monoxide
COB: Chip On Board
CP: Central Processor
CRI: Colour Rendering Index
CSA: Canadian Standards Association
C/W: Comes With
DALI: Digital Addressable Lighting Interface
dB: Decibels
DIN: Deutsches Institut fur Normung", which means "German Institute for Standardization 
DC: Direct Current
DIP: Dual In-line Package
DIY: Do It Yourself
DOB: Driver On Board
DST: Daylight Saving Time
DVD: Digital Versatile Disc
DVR: Digital Video Recorder
EAC: Engineering Accreditation Commission
EAN: European Article Number
ECG: Electronic Control Gear
2007287 (EDK):
EE: Energy Efficient
EEI: Electronic Export Information
EL: Electroluminesce
ELCB: Earth Leakage Circuit Breaker
EMC: Electromagnetic Compatibility
EMI: Electromagnetic Interference
ETIM: Electro-Technical Information Model
FCU: Fused Connection Unit
FT: Foot/Feet (measurement)
FTP: Foiled Twisted Pair
GB: Gigabyte
(phone socket) GET:
GFDI: Grounf Fault Detector/Indicator
GLS: General Lamp Shape
GPRS: General Packet Radio System
GS: Geprufte Sicherheit / Tested Safety
GSM: Global System for Mobile communications
HACCP: Hazard and Critical Point Controls
HB: Horizontal Burning
HCMC: High Conductive Magnesium Composite
HDMI: High Definition Multimedia Interface
HDPE: High Density Polyethylene
HM: Hectometres
HO: Home Office
HPF: High Power Field
HSS: Hollow Structural Section 
HV: High Voltage
Hz: Hertz
IEC: International Electrotechnical Commission
IFC: International Fire Consultants
iHF: Intelligent High Frequency
IMQ: Italian Safety Institute
ID: Identification
IP: International Protection
IR: Ingress Protection
JSON: JavaScript Object Notation
JTR: JouleTherm Rating
K: Kelvin (scale)
Kg: Kilograms
KWH: Kilowatt Hour
L x W x H/D: Length by Width by Height/Depth
LAN: Local Area Network
LCD: Liquid Crystal Display
LED: Light Emitting Diode
LL: Long Life
LM: Lumen
LOR: Light Output Ratio
LTE: Long Term Evolution
LUX: unit of luminous output
M: Metres
MCB: Miniature Circuit Breaker
MHz: MegaHertz (Million Hertz)
MM: Millimetres
MOQ: Minimum Order Required
MPP: Maximun Power Point
MR: Multifaceted Reflector
NEMA: National Electrical Manufacturers Association
NiMH: Nickel Metal Hydride
NOCT: Nominal Operating Cell Temperature
OCPD: OverCurrent Protection Device
PAR: Parabolic Aluminised Reflector
PC: Polycarbonate
PC: Personal Computer
PCB: Printed Circuit Board
PCK: Photo Cell Kit
PDA: Personal Digital Assistant
PDC: Power Distribution Control
PDF: Portable Document Format
PE: Polythene
PID: Potential Induced Degradation
PIR: Passive Infrared
PLC: Programmable Logic Controller
PMMA: Polymethyl Methacrylate
PP: Polypropylene
PPE: Personal Protective Equipment
PSTN: Public Switched Telephone Network
PTC: Positive Temperature Coefficient
PV: PhotoVoltaic
PVC: Polyvinyl Chloride
(1241023300) PVS:
PWM: Pulse Width Modulation
®: Registered Trademark
RAL: Colour Chart
RCBO: Residual Circuit Breaker with Overcurrent Protection
RCD: Residual Current Device
RF: Radio Freqency
RGB: Red Green Blue (colour model)
RGO: Reduced Graphine Oxide
RJ: Registered Jack
RN: Rubber Neoprene
ROHS: Restriction Of Hazardous Substances
RTU: Remote Terminal Unit
SD: Secure Digital
SDCM: Standard Deviation Colour Matching 
SDS: Slotted Drive System
SEAI: Sustainable Energy Authority of Ireland
SKU: Stock Keeping Unit
SMD: Surface Mount Device
SON: Sodium Vapour
SPCO: Single Pole, Change Over
SPDT: Single pole, Double Throw
SPST: Single Pole, Single Throw
S/S: Stainless Steel
SWA: Steel Wire Armoured
T5: Tubular5 (usually no. Represents eighths of an inch, e.g. T5 is 5/8” diameter)
™: Trade-Marked
TIL: Technical Information Letter
TPE: Thermoplastic Elastomers
TRIAC: Triode for alternating current
TRS: Tip Ring Sleeve
TV: TeleVision
UGR: Unified Glare Rating
UHF: Ultra High Frequency
UL: Underwriters Laboratories
USB: Universal Serial Bus
UTP: Unshielded Twisted Pair
UV: Ultra Violet
V: Volts/Voltage
VCR: Video Cassette Recorder
VDE: Verband Der Elektrotechnik (German Certification)
VHF: Very High Frequency
VMU: Virtual Memory Unit
W: Watts/Wattage
WEEE: Waste Electrical and Electronic Equipment Directive
WiFi: Wireless Fidelity
WPS: WiFi Protect Set-up