It is my understanding that there is no standard for colours except for
safety and earth ground type connections being reserved with greens,
yellow bands, etc.

However, my preference from working in PC power supplies has always been

+12,15V  red, return red/black
+5V  orange, return orange/black
gnd,   black
-5v  blue, return blue/black
-12,15v  purple, return purple/black

Then all the signal lines were leftover colours.

Special 'high voltage' I used red/striped with white just for clarity



> Hi,
>
> Does anyone know if there is a harmonised standard for the colours of
> external DC wiring (mains supply) in Europe?
>
> Particularly interested in the colours for 2 wire earthed DC power
> circuits with positive earth.
>
> Thanks,
>  Chris Allen
>    Compliance Specialist
>
>    3Com Europe Ltd
>    Peoplebuilding 2, Peoplebuilding Estate, Maylands Avenue, Hemel
> Hempstead , Hertfordshire HP2 4NW
>    T:    44-1442-438308
>    F:    44-1442-438333
>    M:   44-7768-806801
>    E:   [email protected]
>    www.3com.co.uk
>    _______________________________________________________
>    www.h3cnetworks.com | www.3com.com | www.tippingpoint.com
>

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