Ring Mains Circuit Diagram

You are limited in the length of cable you are allowed to use in both circuits and long spurs could make you exceed the limit.

Ring mains circuit diagram. In this topology one ring network of distributors is fed by more than one feeder. Wiring a socket correctly in a final ring circuit or ring main. Electrical wiring in the united kingdom is commonly understood to be an electrical installation for operation by end users within domestic commercial industrial and other buildings and also in special installations and locations such as marinas or caravan parks. The other type of circuit used to power your home is a radial circuit.

Ring circuits from 32a mcbs in the cu supplying mains sockets. In this case if one feeder is under fault or maintenance the ring. Cable rating for cables used in a ring main must be no less than two thirds of the rating of the ring main s protective device. If this is the case you are asking the circuit to use much more energy than the circuit is designed for.

As you can see the circuit starts and ends at the consumer unit. Please also check the rules very carefully for ring mains and radial circuits. It is a modern way of wiring which reduces breaks in the cable and makes the work much easier and faster. Let s break down the wiring to steps.

Typical house wiring diagram illustrates each type of circuit. So before we get stuck in to some wiring diagrams start here to make sure you keep yourself safe. Ring main electrical power distribution system. Please observe the wiring diagram above.

2 such rings is typical for a 2 up 2 down larger houses have more. Usually the protective devices used on a ring main will be a 30 a fuse 30 a breaker or 32 a breaker and the cables are usually 2 5mm in size. A split load cu. Sometimes called a loop in circuit this shows how power is distributed around the lighting circuit via the ceiling roses.

It goes around the house or a room and connects to all the sockets and fused connection units fcu s required to be on the ring main circuit. Once you have read the safety tips a good place to start is by getting up to speed on the basic radial lighting circuit. In practice meeting this requirement is rarely an issue. They are not so common in the uk but are used extensively abroad as the ring main or final ring circuit does have it s drawbacks.

The ring circuit is still the most common mains wiring configuration in the uk although both 20 a and 30 a radial circuits are also permitted by the wiring regulations with a recommendation based on the floor area served 20 a for area up to 25 m 2 30 a for up to 100 m 2. Live neutral tails from the electricity meter to the cu. In a typical new town house wiring system we have. This wiring diagram shows how all houses and most of commercial lighting installations are wired these days.