A ring circuit, also known as a ring main or ring final circuit, is a domestic electrical wiring system where power outlets (sockets) are connected in a continuous loop that starts and ends at the consumer unit (or distribution board). Each separate ring is fed from the consumer unit via an individual 32A type B circuit breaker and a separate 30mA RCCB via a split load board or a combined. Ring circuits are used in distribution for power and lighting. The sockets consist of three points one connected to a live wire, a neutral wire, and the earth wire. From the meter, the supply goes to the distribution box (distribution board). The topology contrasts with the typical radial circuit configuration, in which.