In message <[email protected]>, dated Wed,
1 Apr 2015, Scott Xe <[email protected]> writes:
The standard calls for IEC 60417 for the symbols. Currently there are
3 symbols to serve different purposes.
1. IEC 60417 - 5017: General earthing
2. IEC 60417 - 5018: Functional earthing
3. IEC 60417 - 5019: Protective earthing
5017 is being proposed to be withdrawn according to IEC discussion
result and suggest not to be used.
Where did you read that? It doesn't seem to be on the IEC web site.
In UK, 5018 shall not be used to indicate a functional earthing
conductor according to the notes of IEC 60417. What was happening for
UK not to use 5018? Is there any replacement for UK?
Your information is out-of-date. The IEC web site has this in the page
for 5018:
2011-07-30: Following Notes were deleted from 2006-10-27 edition.
English:
(1) In UK, this symbol shall not be used to indicate a "functional
earthing conductor (FE)" or terminal but shall be used to indicate a
"noiseless (clean) earth conductor or terminal."
(2) Regarding a symbol to be used in UK to indicate a "functional
earthing conductor or terminal (FE)," see IEC 60445 Ed.4.0, Table 1,
footnote f.
--
OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk
When I turn my back on the sun, it's to look for a rainbow
John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK
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