Yes, a ring circuit you run a single wire around the room and back to the fuseboard. With a spur circuit you run a single wire to the furthest plug. In a typica

Yes, a ring circuit you run a single wire around the room and back to the fuseboard. With a spur circuit you run a single wire to the furthest plug. In a typical room going back to the fuseboard isn't much further so it's not twice as much wire - more like 10% more