Summary: Learn how to add an electrical socket outlet and run a spur from a junction box.
* Notifiable project requiring Building Control approval if installation is located in a kitchen, bathroom or other special location.
To supply new power outlets on a ring main circuit, run a spur from the main circuit. To run a spur from a radial lighting circuit to add lighting points see the section on Extending a lighting circuit.You must be certain that the circuit will not be overloaded and the maximum floor area for the circuit is not exceeded. Consult the sections on circuits of you are unsure.
The easiest way of adding a new socket outlet or a fused connection unit (FCU) is to run a spur from an existing socket. Using a continuity tester, check that the socket is not itself supplied by a spur or supplying another spur.
Running a spur from an existing socket.
If you have floorboards, it may be easier to run the spur directly from the ring main circuit cable under the floor via a 30 amp three-terminal junction box.
Running a spur via a three-terminal junction box
Author: C J Mills Google+
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