I would like to know this also, as I can find no definite standard for DC wire colors in Europe or US. We did have one system evaluated in Denmark, and they insisted that the +24VDC wire be blue and its return be white. I tend to go with the colors used with ATX power supplies: +5V=red, +12V=yellow, +3.3V=orange, -12V=blue, ground=black.
Thanks, John Cochran Strongarm Designs From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of m...@sfo.com Sent: Wednesday, December 16, 2009 9:25 AM To: emc-p...@ieee.org Subject: Re: Cable colours for DC wiring 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: chris_al...@3com.com > www.3com.co.uk > _______________________________________________________ > www.h3cnetworks.com | www.3com.com | www.tippingpoint.com > - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <emcp...@socal.rr.com> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com> - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <emcp...@socal.rr.com> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
