gnuuser
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- Reaction score
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Going back into the mists of time I remember being told during my initial electrical training that ring circuits were standard because you could use smaller cable. It was a resource thing following WW2 and it meant limited copper stretched further. I never looked into it any further and it could have been complete bobbins from my instructor at the time but it sounds plausible.
correct and the benefit of the ring circuit was that you didn't have as much voltage drop in the circuit because you had 2 points of supply on the circuit.
this effectively halved the distance calculations for voltage drop that you required for a radial circuit.
less voltage drop= smaller sized conductor being suitable for the job