Spur's?

[nabby68]

I have a kitchen socket that has a fused spur running of it which supplies some under unit lights. I would like to spur off this socket again with another power socket, is this allowable?

 

[andy]

I have a kitchen socket that has a fused spur running of it which supplies some under unit lights. I would like to spur off this socket again with another power socket, is this allowable?

you should only take 1 spur from a socket

 

[nabby68]

thanks for the reply andrew. so i can't spur from this then? even though the exsisting spur is under unit lighting which would only be using a max of 1amp?

 

[plugwash]

you should only take 1 spur from a socket

thats something i've seen people say a lot but i've never seen it backed up with a quote from the regs.

 

[andy]

you should only take 1 spur from a socket

thats something i've seen people say a lot but i've never seen it backed up with a quote from the regs.

ive never seen it in the regs either, but its a little tight for space getting 4 T&E into 1 socket backbox...

 

[nabby68]

so if it doesn't say it in the regs then would it be ok to do? ie not dangerous? and if i could fit all the cables in.

 

[pdcelec]

But there is a reg which covers it in BS7671

 

[nabby68]

could you point me to the specific part in bs 7671....

 

[ban-all-sheds]

But there is a reg which covers it in BS7671

I'm not convinced...

 

[securespark]

I know of no reg, but I was brought up to believe it was bad practice to spur twice from the same place.

 

[pdcelec]

314-01-04

 

[Jaymack]

314-01-04

This is the actual regulation, (english as she is writ): -
314-01-04 Where an installation comprises more than one final circuit, each final circuit shall be connected to a separate way in a distribution board. The wiring of each final circuit shall be electrically separate from that of every other final circuit, so as to prevent the indirect energising of a final circuit intended to be isolated.

I don't see the relevance of the above regulation to the discussion; and I don't see any other regulation which would apply.

See OSG P153: -Spurs
The total number of fused spurs is unlimited but the number of non-fused spurs should not exceed the total number of socket outlets and items of stationary equipment connected directly in the circuit.

As far as I can see, there is no restriction mentioned, on the number of spurs connected to a specific socket outlet. That would be determined by the practicalities of the number of cables/core terminations at the point.

 

[pdcelec]

A spur from the ring is just that a spur. A spur from a spur is a radial circuit. Therefore the radial circuit should be on its own protective device

 

[BJS_Spark]

P153 of the OSG also goes on to say:

A non-fused spur feeds only one single or one twin or multiple socket-outlet or one permanently connected equipment. Such a spur is connected to a circuit at the terminals of a socket-outlet or junction box or at the origin of the circuit at the distribution board.

 

[Jaymack]

A spur from the ring is just that a spur. A spur from a spur is a radial circuit. Therefore the radial circuit should be on its own protective device

As I understand it, the originator has already got a fused spur from a socket and asks if he can connect a spur to the same socket.