Latest wiring color code

Latest wiring color code

Below you’ll find the latest wiring color code according to European standards (EN 60445 Section 6 and IEC 60227-1 Section 4.1.2), American standards (UL 62 and CSA C22.2 No. 49) and Japanese standards (JIS C 3306):

ConductorsEuropean/international*North American**Japanese***
2 Conductors2 Conductors2 Conductors
LineBrown Black OR BrownBlack
NeutralBlue White OR BlueWhite
3 Conductors3 Conductors3 Conductors
LineBrown Black OR BrownBlack
NeutralBlue White OR BlueWhite
GroundGreen/Yellow Green OR Green/YellowGreen
4 Conductors4 Conductors4 Conductors
LineBrown Black OR BrownBlack
LineBlack Red OR BlackRed
Line/NeutralGray White OR GreyWhite
GroundGreen/Yellow Green OR Green/YellowGreen
5 Conductors5 Conductors5 Conductors
LineBrown Black OR Brown
LineBlack Orange OR Black
LineGrey Red OR Grey
NeutralBlue White OR Blue
GroundGreen/Yellow Green OR Green/Yellow
*EN 60445 Section 6 and IEC 60227-1 Section 4.1.2
**UL 62 and CSA C22.2 No. 49
***JIS C 3306

Color codes listed on this chart are typical for what is seen in flexible, single core or fixed cables used in AC systems. Other colors may be used for certain conductors according to the application.

The old wiring color code from 2007, IEC 60446 was merged with IEC 60445 (2017), “Basic and safety principles for man-machine interface, marking and identification – Identification of equipment terminals, conductor terminations and conductors”. IEC 60446 is no longer used.

The latest wiring color found in IEC 60445 standard applies to the identification and marking of terminals of electrical equipment such as resistors, fuses, relays, contactors, transformers, rotating machines and, wherever applicable, to combinations of such equipment (e.g. assemblies), and also applies to the identification of terminations of certain designated conductors. It also provides general rules for the use of certain colors or alphanumeric notations to identify conductors to avoid ambiguity and ensure safe operation. These conductor colors or alphanumeric notations are intended to be applied in cables or cores, busbars, electrical equipment and installations.

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