Electrical Wiring Colours Standards | Phase 3 Connectors

or three phase electricity supply, circuits will use five wires: earth wire, neutral wire, live wire, line 2 wire, line 3 electrical wire. This article details the following cable colour codes:
    – International Wiring Colours
    – European Wire Colour Standards
    – Old & New UK Wiring Colours

Fixed wiring electricity supply requires specific wiring colour regulations (bs 7671) to identify different power lines in different countries. The USA have their own wiring colours for electrical circuits, black, red, and blue are used for 208 VAC three-phase; brown, orange and yellow are used for 480 VAC. Australia also have a different wiring colour standard. The UK’s new cable colours for plugs are now harmonise with Europe’s power cable colours for AC & DC. Most of Europe abides by IEC (‘International Electrotechnical Commission’) electrical wiring colours code for AC branch circuits.