Short and sweet: No. There are some conventions people adopted over the years which may be confusing: where in AC/DC feed, the DC side is Red for (+) and Black for (-), in some -48 V systems I've seen the reverse.
What is important is the correct polarity marking such as -48 (-) and Return (+). Cheers, N. Shani On Thu, Apr 12, 2012 at 01:53, Kannan Dhamodharan < kan...@india.tejasnetworks.com> wrote: > Dear Members,**** > > ** ** > > Are there standard color coding used for DC supply wiring in North America > (example: BS7671 in UK) ? Especially for telecom installations. **** > > Appreciate your help in advance. **** > > ** ** > > Thanks and Regards**** > > Kannan**** > - ---------------------------------------------------------------- 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.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. 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...@radiusnorth.net> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
