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Old 11th Oct 2011, 3:48 am   #44
Join Date: Oct 2011
Location: San Francisco, California, USA.
Posts: 6
Default Re: Another unusual plug and some other questions

Here is an excerpt from "The Principles And Practice Of Modern House-Construction | by G. Lister Sutcliffe" published in 1900. The link given is to Part IV,Wiring and Lamps.

So there you see a plug and socket arrangement in the UK as far back as 1900. It looks like a standard 5A plug. In 1904 Hubbell invented and manufactured the flat-blade plug that became the US standard.
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