STANDARD ELECTRICAL WIRING COLOUR CODE - LCETED

WIRING COLOR CODE

We are using Red for Live or Phase, Black for Neutral and Green for Earth Wire for single phase. And for three-phase Red = Phase 1 or Line1, Blue = Line 2, Yellow = Line 3 Black for Neutral and Green for Earth Wire

Where according to,

NEC: National Electrical Code

(US & Canada)

SINGLE PHASE:

Black = Phase or Line, White = Neutral and Green/Yellow = Earth Conductor

THREE PHASE:

Black = Phase 1 or Line1, Red = Line 2, Blue = Line 3, White / Gray = Neutral and Green/Yellow = Earth Conductor

IEC: International Electro-technical Commission

(UK, EU etc)

SINGLE-PHASE:

Brown = Phase or Line, Blue = Neutral and Green = Earth Conductor

THREE-PHASE:

Grey= Phase 1 or Line1, Black = Line 2, Brown = Line 3, Blue = Neutral and Green= Earth Conductor

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