GB.Kayak
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The term 'ring main' is still in use today in professional circles with the same meaning it has always had, a distribution circuit in the form of an open ring, usually at 11KV.
It has never been the correct term for a ring final circuit.
d, thanks for the correction ... I had a feeling that it was only ever used by us, the great unwashed ... or uninitiated in the arcane world of electrical distribution and installations. Unfortunately I had not known for sure!
GB