I read in !emc-pstc that michael.sundst...@nokia.com wrote (in <57a26d272f67a743952f6b4371b8f81101e42...@daebe007.americas.nokia.com>) about 'Surge Suppressors on a UPS' on Mon, 2 Jun 2003: > I also don't understand the prohibition of an extension cord. Maybe > this is a legal issue, as I can't see any valid safety or > regulation issues here. We regularly put a UPS in the bottom of a > rack system, and then wire a stripline outlet set for the height of > the rack. Isn't that the electrical equivalent of an extension > cord? What am I missing?
I think you are right. The advice is a cop-out. A surge suppressor on the output of a UPS should, in theory, never be activated. But something outside the spec of the UPS, such as a close lighting strike, might activate it and perhaps damage the UPS. Banning extension cords (without surge suppressors) is bizarre and inexplicable. I see the leaden hand of the corporate attorney there. > -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: emc_p...@symbol.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
