colour codingcolor codingn.

1931 Radio Engin. Aug. 49 In this comprehensive volume you will find electrical diagrams—chassis wiring diagrams—color coding of connecting wire—color coding of resistances—electrical values—voltage data—socket layouts—etc.

1932 Radio Engin. Mar. 31/2 Obviously the electrical wiring diagram cannot show the color coding of every wire used. But it can show the color coding of the power transformer cables.

1946 W. D. Wright Res. Normal & Defective Colour Vision 295 The obvious example of this is in the use of coloured signals on the railways and elsewhere, but the same principle is applied in many different forms, such as the colour-coding of telephone cables.

1952 Brit. Med. Jrnl. 29 Mar. 675/1 During recent years industry has paid increasing attention to colour coding of danger points in factories to indicate high voltage lines, toxic gases, and obstructions such as low doorways and steps.

1967 Math. Gaz. 51 246 There is available with each film a folder which describes the basic movements the film illustrates and which also explains the colour coding used.

2003 N.Y. Times (National ed.) 18 May i. 1/6 The color coding that was used on television news reports to denote states voting for President George W. Bush during the last election.