Section 2.5.5 of IEC 60950 specifies the green/yellow or other options for "earthing conductors". However, under the langauge of 2.5.1 an earthing conductor is one required for the safety reasons defined. Grounding conductors that are not for safety must NOT be green/yellow.
George Alspaugh ---------------------- Forwarded by George Alspaugh/Lex/Lexmark on 12/14/99 11:24 AM --------------------------- paul_j_smith%[email protected] on 12/14/99 09:15:57 AM Please respond to paul_j_smith%[email protected] To: cmarti%[email protected] cc: emc-pstc%[email protected] (bcc: George Alspaugh/Lex/Lexmark) Subject: Re: GROUND COLOR CODE FOR CE MARK (EN60204-1) Christian, My recollection on subject standard's colors for ground other than primary safety ground is that they can be any color you choose as long as you are consistently using the same color chosen for grounds or other signal and they are labelled as to their function (e.g. GND) or signal designation ( e.g. 5 Vdc, etc.) at each end where they are serviceman accessible. I invoke the following disclaimer recently suggested by Oscar Overton for the above. The previous is just my opinion (humble or otherwise) and should not be construed as the opinion of my employers (past, present, and future) ; spouse, offspring, or blood relatives; local, state, federal, international, galactic, or universal law, nor any entity of creation - living, dead, or resurrected. If questions, please contact me ASAP. Best Regards, Paul J Smith Teradyne, Inc., 321 Harrison Ave., MS-H64 Boston, MA 02118 [email protected] Voice 617-422-2997 Fax 603-843-7526, or Fax 617-422-2801 Christian Mart
í <[email protected]> on 12/14/99 03:22:02 AM Please respond to Christian Martí <[email protected]> To: [email protected] cc: (bcc: Paul J Smith/Bos/Teradyne) Subject: GROUND COLOR CODE FOR CE MARK (EN60204-1)
Hello to everybody: I have a doubt regarding the color code for ground cables according EN60204-1 (for CE mark): In the norm is stated that all protective earth wires MUST be yellow green. Now my question is the following: What color must be cables that are connected to ground because they need to be referenced to ground, but are NOT protective earth wires? (ex: secondary of a transformer,...that
´s what I think is called functional equipotential conections ) According to the norm seems that they still need to be yellow-green, but one guy from TUV told me that these wires MUST NOT be yellow-green (they could be any different color except yellow-green). I appreciate your comments, and advises of were to find this information. Thanks. --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators).
