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 Brown ConductorBlack Black Conductor OR Brown Conductor BrownBlack Black Conductor
NeutralBlue Blue ConductorWhite White conductor OR Blue Conductor BlueWhite White conductor
3 Conductors3 Conductors3 Conductors
LineBrown Brown ConductorBlack Black Conductor OR Brown Conductor BrownBlack Black Conductor
NeutralBlue Blue ConductorWhite White conductor OR Blue Conductor BlueWhite White conductor
GroundGreen/Yellow PE ConductorGreen Green Conductor OR PE Conductor Green/YellowGreen Green Conductor
4 Conductors4 Conductors4 Conductors
LineBrown Brown ConductorBlack Black Conductor OR Brown Conductor BrownBlack Black Conductor
LineBlack Black ConductorRed Red Conductor OR Black Conductor BlackRed Red Conductor
Line/NeutralGray Grey ConductorWhite White conductor OR Grey Conductor GreyWhite White conductor
GroundGreen/Yellow PE ConductorGreen Green Conductor OR PE Conductor Green/YellowGreen Green Conductor
5 Conductors5 Conductors5 Conductors
LineBrown Brown ConductorBlack Black Conductor OR Brown ConductorBrown
LineBlack Black ConductorOrange Orange Conductor OR Black Conductor Black
LineGrey Grey ConductorRed Red Conductor OR Grey Conductor Grey
NeutralBlue Blue ConductorWhite White conductor OR Blue Conductor Blue
GroundGreen/Yellow PE ConductorGreen Green Conductor OR PE Conductor 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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