Ring Circuit Radial Circuit Diagram

The top diagram shows the existing radial circuit the bottom diagram shows the original radial circuit converted into a ring circuit.

Ring circuit radial circuit diagram. Radial circuit converted to ring circuit. The main advantage of ring main circuit is if any single connector is broken or disconnected at any point in the circuit all the other sockets will still work because they will be being act as radial circuit and fed from the other end of the circuit. As described above a radial circuit starts at the consumer unit connects to each socket outlet in turn and ends at the final socket outlet. Ring circuits are wired with 2 5mm 2 cable and always have a 30amp fuse 32 amp mcb.

If the cables in your circuits are red and black please see multi point radial lighting circuit old cable colours. The ring circuit is made up of two radial circuits connected to the same series of accessories within the circuit. The two diagrams show the difference between the radial and ring circuits. Within the electrical industry the ring main circuit sometimes ring main or ring final circuit is an electrical wiring technique that is most commonly used in the uk.

In electricity supply design a ring final circuit or ring circuit often incorrectly called a ring main a term used historically or informally a ring is an electrical wiring technique developed and primarily used in the united kingdom this design enables the use of smaller diameter wire than would be used in a radial circuit of equivalent total current. Fig 1 shows what is referred to as a radial circuit sometimes called a loop in or multi point radial lighting circuit. In a ring circuit simply put it the wiring is connected at both ends of the circuit. Radial socket outlet circuits are less common in uk dwellings as until recently the usual method was the ring circuit.

A radial circuit must follow these rules in general. The new part of the circuit is shown in orange. The diagrams below shows the new harmonised cable colours. Floor areas of no more than 50m2 requires a 20 a fuse or miniature circuit breaker protection with 2 5 mm live and 1 5mm protective conductors or 1 5 mm if m i.