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Old 18th Oct 2012, 7:17 pm   #47
Lucien Nunes
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Location: London, UK.
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Default Re: 13 amp plug question

Quote:
Thanks for all your replies to this thread, but as one of the correspondent's observes, we still do not have definitive answer
The answer is apparently in clause 15 of the original edition of the standard, BS1363:1947, which mandates a visible earth conductor according to
http://en.wikipedia.org/wiki/BS_1363

I have always understood this to be the function although don't specifically recall reading BS1363:1947. It is corroborated by the many catalogues advertising visible earth connections on many types of plug. I cannot think of any plug in which the notch does not reveal the conductor. There is a lot of circumstantial evidence that this is the only 'correct' purpose for the slot.

Lucien
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