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Old 3rd Oct 2012, 2:17 pm   #15
Nickthedentist's Avatar
Join Date: Jan 2005
Location: Oxford, UK.
Posts: 15,755
Default Re: 13 amp plug question

Originally Posted by G8HQP Dave View Post
According to Wikipedia the hole was for inspection of the earth connection (see caption under picture on right), and was a requirement of the original 1947 version BS 1363. Presumably dropped in a later revision.
Well spotted, Dave. It's a shame historic BSs aren't available online, as they'd make interesting reading for us.

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