Hans, All countries mentioned accept a double-insulated (Class II) or earthed (Class I) products. No distinction is made between SOHO and Enterprise. This distinction may be the demand of a customer in the destination country.
To meet Nordic requirements for Class I, additional marking/labeling may be required as per the national deviations in the various standards (IEC60335-1, IEC60950-1, IEC60601-1, etc.). However, many end-product designers require from their power supply vendors to design the Class I earthed power supplies so that there is double or reinforced (in lieu of basic) insulation between the primary parts and earthed parts. Their rationale is that if the earth failed in the countries where earth cannot be relied upon, then at least the power supply is designed to meet double insulation requirements as well. Regarding your last question: "How about a brick powered router that is metal enclosed and being fed by a double insulated adapter? Is grounding necessary for the mere fact that it is connected to a telco or cable (if a cable modem)?" If you have designed your telecom to SELV properly and you do not rely on earthing from the power supply, then yes, you do not need an earthed power supply. Best Regards, Peter Merguerian Hans <htm...@yahoo.com> wrote: I have an additional question regarding when to use a 2-pin or a 3-pin AC cord to the adapter or device. Specifically, When are 3-pin required and when are 2-pin required? My assumptions were up to now that for Enterprize class products, a 3-wire cord is always required whether it feeds a rack mount unit or a desktop unit. Are there any country exceptions to that? For SOHO units, it is my understanding that either a 2-wire or 3-wire is ok except where the product clasification warrants a 3-wire. Examples of that are PC's, home DSL routers etc. Are there any countries that force the usage of 2-pin cords for SOHO products? How about Finland where they rely on non-grounding for safety at the home? How about a brick powered router that is metal enclosed and being fed by a double insulated adapter? is grounding necessary for the mere fact that it is connected to a telco or cable (if a cable modem)? Thanks in advance Hans Mellberg --- peter merguerian wrote: > Bob Foster > > The following countries have regulations in place: > > India (safety) > Israel (safety, emc) > Saudi Arabia (safety, emc) > South Africa (safety, emc) > Australia (safety, emc) > Mexico (safety) > Argentina (safety) > Taiwan (safety, emc) > Korea (safety, emc) > China (safety, emc) > Japan (safety, emc) > Russia (safety, emc) > Singapore (safety) > Ukraine (safety, emc) > > You can contact me off-line if you need help in > getting the above certifications. > > Best Regards, > > Peter Merguerian > > > Bob Foster wrote: > Colleagues..... > > There was some recent discussions regarding power > cubes. I have developed a new question. > > Does anyone know of a Web site that lists individual > country requirements for power adapters (power > adapter is a device that takes line voltage and > converts down to a lower DC level), some may call it > a power brick? As an example, Korea requires all > power adapters to have the "EK" mark. Some countries > have specific safety and marking requirements but > others do not. It would be nice to have such a > matrix. > > I am specifically interested in the Asia/Pacific and > Latin/South America country requirements for power > adapters. > > Thanks for any guidance, > > Bob Foster > Compliance Engineer > SpectraLink Corp > 5755 Central Avenue > Boulder, CO 80301 > Phone: 303-583-5524 > FAX: 303-443-1746 > bfos...@spectralink.com > Best Regards Hans Mellberg San Jose, CA 95128, USA ______________________________________________________ Click here to donate to the Hurricane Katrina relief effort. http://store.yahoo.com/redcross-donate3/ __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com - 2005 IEEE Symposium on Product Safety Engineering 3-4 October Schaumburg, IL http://www.ieee-pses.org/symposium ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/listserv/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
