How To Run A Ring Main

First make sure your socket is on the ring main so you can spur from it.

How to run a ring main. Just to add to the subject alot of the houses that i work on are in access of 3000sq ft now depending on the positioning of the dis board some of the circuit lengths to get to the 1st skt on the ring could be as much as 20 25mtrs so by the time i have run from the db to the 1st skt and picked up the further 4 5 skts in that room and run back to the db max circuit length has been over run. 3 the volt drop will be reduced. A ring main or final circuit is exactly what it says on the tin. 2 the earth loop impedance will drop.

Extending a ring main and adding more sockets to a room. Its simplicity makes it a great arrangement for that use. 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. In this video i show how to wire a spur socket to a ring final circuit using 2 methods 1.

Then mount a pvc box next to socket drill thru it to get you outside and mount a waterproof adaptable box outside take cable 2 5 twin from socket to pvc box put rcd spur on here then take 2 5 twin from rcd spur to box outside terminate your armoured in this box and your sorted. In practice meeting this requirement is rarely an issue. B is the loop impedance going to be too high. How to extend a ring main and add sockets to the ring main.

As you can see it eliminates the need to wire a socket all the way back to the a consumer unit but the nearest ring main socket is used instead. How to wire a ring main final main ring circuit or final circuit ring. By using a junction box and connecting into the ring circuit cable. 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 and to a lesser extent in ireland this design enables the use of smaller diameter wire than would be used in a radial circuit of equivalent total current.

1 current can be increased on the circuit. The main purpose of a spur is adding an extra socket on to an existing ring main circuit. To form a ring rather than a radial gives three advantages. 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.

A is there a problem with the mcb tripping. Which will make them too hot and if they are buried in the wall they must be in a protective conduit and only run vertically from above or below the sockets. So question is why do you want a ring. While not always the case generally two conductors indicate a ring final circuit one indicates a radial circuit.