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This circuit might be described as a "butterfly" circuit.
I think we've already establish a standard naming convention for this as per @David Prosser 's proposition in this post:-
Ring main.
Going the other way round and this is from a European web site "The rules for ring wiring say that the rated current of the cable must be at least two-thirds of the rating of the protective device. This means that the risk of prolonged cable overload can be considered minimal. However, in...
www.electriciansforums.net
I think the standard is BS DP1 - Naming conventions for unconventional/unorthodox ring final circuits (1st Edition - 2020).
I've just heard ammendment 1 is due in a couple of weeks, C&G are working on a qualification so we can prove our competence... the standard is £75 a copy, the exam is £150 and I believe a corrigendum will follow for the single page document in a matter of days. Got to keep up with the IET in terms of quality control