Chris,
I believe that only the protective earth ground can be required to be
green-yellow. This protective earth ground must have its own locking washer and
nut secured first on any ground terminal stack-up. All other subsequent bonding
or grounding to chassis must not be green-yellow. Consistently same color and
labelling on all bonding wires is recommended.
The previous disclaimer included in my 12/14/99 email also applies to this
email.
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
Chris Dupr
és <[email protected]> on 12/14/99 05:59:36 PM
Please respond to Chris Duprés <[email protected]>
To: emc-pstc <[email protected]>
cc: (bcc: Paul J Smith/Bos/Teradyne)
Subject: Copy of: GROUND COLOR CODE FOR CE MARK (EN60204-1)
---------- Forwarded Message ----------
From: Chris Dupr
és, 100014,3703
TO: Christian Martí, INTERNET:[email protected]
DATE: 14/12/99 18:36
RE: Copy of: GROUND COLOR CODE FOR CE MARK (EN60204-1)
Hi Christian.
You asked.
<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 )>
My interpretation of the scene is that ALL wires that are there to provide
a path for fault currents for the purposes of protective grounding, should
be green/yellow, and should be given their own terminal. Any other wires,
whether analogue reference grounds, screening, power returns, anything,
should be the colour most related to their purpose. E.g. if the wire
carries an a.c. control voltage common, then red. If the wire carries a
d.c. control or power return, then blue. If an analogue reference then
black. etc. etc. I do not expect to see different colour wires on one
terminal post.
Just an opinion, and the way I've been doing it for years.
Chris Dupres
Surrey, UK.
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