Re: Another unusual plug and some other questions
The catalogue lists cord-grip pendant lampholders S1143 and S1143A 'With visible earth terminal' and an option to have the wooden cable grip collets in extra-large size with a single hole in place of the customary two for twisted twin. There are also switched versions S1473 and S1323. No pictures unfortunately.
Earth terminals aren't mentioned for threaded entry lampholders presumably because they expected continuity from the wiring system.
Lucien
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