GOST R 50462-2009 Basic and safety principles for man-machine interface, marking and identification. Identification of conductors by colours and alphanumerics
2009GOST R 50462-2009 Basic and safety principles for man-machine interface, marking and identification. Identification of conductors by colours and alphanumerics
1992GOST R 50462-1992 Identification of conductors by colours or numerals