DIN EN 60446:2008 Basic and safety principles for man-machine interface, marking and identification - Identification of conductors by colours or alphanumerics (IEC 60446:2007); German version EN 60446:2007
2011DIN EN 60445:2011 Basic and safety principles for man-machine interface, marking and identification - Identification of equipment terminals, conductor terminations and conductors (IEC 60445:2010); German version EN 60445:2010
2008DIN EN 60446:2008 Basic and safety principles for man-machine interface, marking and identification - Identification of conductors by colours or alphanumerics (IEC 60446:2007); German version EN 60446:2007