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Global three-phase industrial power cable colors
The voltage frequency and related implementation standards vary around the world, so the colors of three-phase cables are also different.
The following table describes the common range of cable colors and phase correspondence.
| Region | L1(A) | L2(B) | L3(C) | N(Neutral Line) | PE(Protective Earth Wire) |
| China | Yellow | Green | Red | Blue | YellowGreen |
| European Union (IEC) | Brown | Black | Gray | Blue | Yellow-Green |
| USA | Black | Red | Blue | White/Gray | Yellow-Green |
| Canada | Red | Black | Blue | White | Yellow-Green |
| Australia | Red | White | Blue | Black | Yellow-Green |
