Type one lighting circuit. 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 25mm in size.
Home Electrics Light Circuit
Ring main lighting circuit diagram. Diagram of a possible configuration of ring final circuit. So before we get stuck in to some wiring diagrams. It goes around the house or a room and connects to all the sockets and fused connection units fcus required to be on the ring main circuit. In modern domestic properties in the uk the main electric lighting circuits are separate from the power ring main circuit. Video explains the connection required within the ceiling rose one way switch and. We have and extensive collection of common lighting arrangements with detailed lighting circuit diagrams light wiring diagrams and a breakdown of all the components used in lighting circuits.
Consumer unit cu the consumer unit previously called a fusebox contains these things. 20a radial socket circuits. Please observe the wiring diagram above. Consumer unit fuse box is at bottom left. The diagram is shown with 6a lighting fuse and 32a ring circuit mcb. All the light wiring diagrams are available in the old and the new cable colours to avoid confusion.
Cable rating for cables used in a ring main must be no less than two thirds of the rating of the ring mains protective device. The ring is fed from a fuse or circuit breaker in the consumer unit. A single 56 amp circuit can cope with up to twelve 100 watt lamps it is usual in a multi. This switches off everything. Student training aid for the connections required to wire a lighting circuit using the 3 plate loop in method. The second system in popular use is the junction box circuit or system.
Other options are also possible. The consumer unit contains the main switch and the fuses for all of the fixed circuits such as the power ring circuit and the lighting circuit. A main isolating switch. In practice meeting this requirement is rarely an issue. Power is taken from the consumer unit to the first junction box. As you can see the circuit starts and ends at the consumer unit.
A cable is run from the junction box to the light usually via a ceiling rose. The live is interrupted by the switch wiring and the circuit is carried on to the next junction box. 10a lighting circuits are occasionally used. Each house should ideally have at least two lighting circuits. The power sockets in a house are connected by means. Each protected by a 5 amp fuse or 6 amp trip in the consumer unit.
Use a multi meter to test for a radial or ring main final ring circuit available from our online store here even though the sockets are connected to two cables or 25mm and supplied by a 32 amp fuse or mcb it cannot be guaranteed that it is a ring main or final circuit. In most cases at least one rcd. The ring starts at the consumer unit also known as fuse box distribution board or breaker box visits each socket in turn and then returns to the consumer unit.
Gallery of Ring Main Lighting Circuit Diagram
