Socket Ring Main Diagram

Junction boxes come rated for different uses by the amps they are allowed to carry.

Socket ring main diagram.

A separate ring main is usually installed on every floor of a given property to make sure things are kept safe and it is only when for example a spur socket additional socket is added on an upstairs ring main to feed a socket or light on a downstairs circuit that things can get tricky. The cable size is important it has to be either 2 5sq mm or 4 0sq mm twin core and earth these are rated in free air at 24amps or 32amps respectively. 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. Its simplicity makes it a great arrangement for that use.

For the rules that govern how tis can be dne please. Connect the cables as shown in the diagram for a ring main circuit. As before brown is live blue is neutral and the earth wire is bare copper with a green yellow sleeve. Ring mains as they are called are a series of cables linked together starting and terminating at the same point in a distribution board.

Consumer unit fuse box is at bottom left. In the diagram here in and out are the existing ring cables and spur is the new cable leading to the new socket outlet. Consumer unit wiring diagram. Rear view of double socket showing ring main in and ring main out wiring.

A 30amp junction box should be used on a ring or radial circuit feeding sockets only. The main purpose of a spur is adding an extra socket on to an existing ring main circuit. The wiring for a junction box can be seen here. For a radial circuit or spur off a ring main there will only be one cable.

Diagram of a possible configuration of ring final circuit. Ring main and spurs. Connect the cables as shown in the diagram for a ring main circuit. The ring is fed from a fuse or circuit breaker in the consumer unit.