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Thursday, September 10, 2020

Various International Electrical Wire Colour Coding Standards (EWCS)

Electrical wiring colors coding standard (EWCS) for three phase electrical applications are standardized to assist the identification and detection of individual wire phases. Wiring color codes for Alternating current (AC) and Direct current (DC) power distribution circuits have altered on various occasions and modify depending on region.

Three Phase Electricity Supply

Circuits will use five wires: 

  1. Earth wire
  2. Neutral wire
  3. Live wire
  4. Line 2 wire
  5. Line 3 electrical wire

International Wiring Colors Codes

The Fixed Wiring Electricity Supply (FWES) needs particular wiring color regulations (WCR-BS 7671) to classify various power lines in distinctive countries. 

Wiring  Codes for USA

The United States of America (USA) have their own wiring colours for electrical circuits:

  • Black
  • Red
  • Blue

These USA’s Color Codes are used for 208 VAC three-phase.

Wiring Colors Codes for Australia

Australia also have a peculiar wiring color standard (WCS). Wiring Colors Codes for Australia are:

  • Brown, 
  • Orange  
  • yellow 

All above mentioned color codes for Australia are used for 480 VAC. 

The United Kingdom-UK's new cable colors for plugs are now unified with Europe's power cable colors for Alternating current (AC) and Direct current (DC). Most of Europe abides by IEC ('International Electro Technical Commission') electrical wiring colors code for Alternating current (AC). 

Region

Earth (E)

Neutral (N)

Line 1 (L1)

Line 2 (L2)

Line 3 (L3)

Europe & UK

Green (GR)

Blue Neutral Wire Wiring Colour CodeBlue

Brown Wire Wiring Colour CodeBrown

Black Wire Wiring EU UK Colour CodeBlack

Grey Wire Wiring Colours UK EUGrey

Australia

Green Earth Wiring ColoursGreen

Black Wire Wiring Colour CodingBlack

Red Wire Wiring Colour CodingRed

White Wire Wiring Colour Coding Australia CodeWhite

Blue Wire Wiring Colour CodeBlue

USA

Green Earth Wiring ColoursGreen

White Usa Neutral Wire Wiring Colour CodingWhite

Black Wire Wiring Colours CodingBlack

Red Wire Wiring Colours CodingRed

Blue Wire Wiring Colour CodeBlue




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