These TUV guys again. Let me add this about the power cord: The answer may be that we sometimes have to apply national standards. The GS mark requires the use of such standards. EN60950 references IEC227 for power cords. IEC 227 does not require a specific color for line and neutral. HD 21 that is also referenced is specifying DINVDE0281 which then calls upon DINVDE0293. There we find that yellow/green, blue, brown and black are required. Approved power cords use the correct color scheme. Matthias R. Heinze TUV Rheinland
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of WOODS, RICHARD Sent: Thursday, July 30, 1998 6:33 AM To: [email protected] Subject: RE: EN60950 - Internal wiring colours I too have had problems with TUV requiring brown/blue, so it became a company standard from the inlet to the first component. UL and CSA had no problem with this arangement. > ---------- > From: [email protected][SMTP:[email protected]] > Reply To: [email protected] > Sent: Thursday, July 30, 1998 8:02 AM > To: [email protected] > Cc: [email protected] > Subject: Re: EN60950 - Internal wiring colours > > [email protected],Internet writes: > >Unless I am missing something, I see no reason why I can't allow our > >North American black and white wiring colours to be used for the line > >and neutral wiring INSIDE a product, even though that product is > >destined for CE-marking and European sales. EN60950 only limits the use > >of green/yellow wiring. As far as I can see, it does not mandate the > >blue/brown colour code. > > > >Does anyone disagree? Thanks. > > > > > >Regards, > > > >Jim Eichner > >Statpower Technologies Corporation > >[email protected] > >http://www.statpower.com > >Any opinions expressed are those of my invisible friend, who really > >exists. Honest. > > > > > Jim, > > I know of no reason you cannot use other than brown / blue inside your > product. I have had occasion to use both intermixed in a product. The TUV > guys preferred that brown/blue was the mains wiring up to the primary of > the transformer. The secondary side was mixed with black/white. > > Never saw a requirement in writing but eventually got tired of explaining > so we now use brown/blue exclusively for anything mains related. In fact, > we prohibit brown/blue for use on any other voltage than mains. And as > always, green / yellow is the only earth ground color; again, its use is > exclusive. We have no problem from CSA with this scheme. > > Regards, > Scott [email protected] >
