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1 members (Scott35),
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Joined: Sep 2002
Posts: 943 Likes: 2
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I wonder what the intended use for that 3-prong plug was! It can't really have been earthing if there was an Edison adaptor. Maybe it was designed for two hots, e.g. from a 3-way Edison socket.
Edison to socket adaptors were banned in Germany rather early, actually in 1959 (along with plug-in multi adaptors for Schuko plugs as they were considered dangerous for the mechanical integrity of the socket). Don't know when they were banned in Austria, but probably not much later. Last time I've seen one in use was back in the 90s and they were rare by then. There is a screw terminal on the side to attach a grounding conductor.
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Joined: Feb 2002
Posts: 2,233
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Gee, are those plugs tamper resistant? 
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Joined: Sep 2002
Posts: 943 Likes: 2
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Gee, are those plugs tamper resistant? That was before the days of Stalinist Political Correctness. 
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Joined: Dec 2001
Posts: 2,498
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I wonder what the intended use for that 3-prong plug was! It can't really have been earthing if there was an Edison adaptor. Maybe it was designed for two hots, e.g. from a 3-way Edison socket.
Edison to socket adaptors were banned in Germany rather early, actually in 1959 (along with plug-in multi adaptors for Schuko plugs as they were considered dangerous for the mechanical integrity of the socket). Don't know when they were banned in Austria, but probably not much later. Last time I've seen one in use was back in the 90s and they were rare by then. There is a screw terminal on the side to attach a grounding conductor. On the light socket? How would that connect to the bulb/adaptor? I'd assume that's only for the metal shell of the socket itself.
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Joined: Jul 2004
Posts: 9,931 Likes: 34
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See #24 in the diagram.
That would connect a ground pigtail coming from the socket base (or a cold water pipe) to the plug cap ground.
Greg Fretwell
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Joined: Dec 2001
Posts: 2,498
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See #24 in the diagram.
That would connect a ground pigtail coming from the socket base (or a cold water pipe) to the plug cap ground. Aah, yes now I see!
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Posts: 43
Joined: September 2013
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