The main purpose of a spur is adding an extra socket on to an existing ring main circuit.
Socket ring main wiring.
Its simplicity makes it a great arrangement for that use.
Add a spur socket to 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.
This video shows you how sockets are wired in the home.
The ring circuits of a domestic property supply the socket outlets and fixed appliances in the premises.
How to wire sockets in your home ring circuit.
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.
Wiring a socket correctly in a final ring circuit or ring main.
Ring mains as they are called are a series of cables linked together starting and terminating at the same point in a distribution board.
How to wire a spur socket to ring circuit.
The other type of circuit used to power your home is a radial circuit.
If you need extra sockets in a new room or turn an old room into an office it may not be possible to add extra sockets from your existing ring main.
Ring main and spurs.
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Design and protection for ring main circuits.
The ordinary wall sockets around the house are normally connected to a ring circuit also referred to as a ring main.
Ring circuits are commonly used in british wiring with socket outlets taking fused plugs to bs 1363 because the breaker rating is much higher than that of any.
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 is fed from a fuse or circuit breaker in the consumer unit.