Hi Joe:
> Does anyone know the clause or statement that
> identifies "L" for Line voltage and "N" for
> Neutral A.C. mains marking in the LVD or any
> EU standard published?
Clearly, L and N are abbreviations.
There is confusion whether L means "live" or "line."
N, in this context, clearly means "neutral."
IEC 364-1 defines LIVE PART as:
"Any conductor or conductive part which is at
voltage in normal use."
"Note. Live parts also include the neutral
conductor and conductive parts which are
connected to it."
IEC 364-1 defines NEUTRAL CONDUCTOR as:
"A conductor connected to the neutral point and
for the purpose of transmitting electrical
energy."
IEC 364 does not define LINE.
I suspect "line" was originally a shortened form of
"power line."
However, today we often use it to mean the live (as
opposed to neutral) conductors of the power line
system.
Lastly, we often abbreviate words by their first
letter, hence volt is V, ampere is A, meter is m,
gram is g, etc. The rule for abbreviations is that
if the word is a proper noun, the letter is upper
case; otherwise it is lower case.
But, this does not seem to be the case for L and
N.
Regards,
Rich
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