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Up the Spurs?

Posted: Sat Aug 26, 2006 10:20 am
by CHESTER DRAWERS
Hi,

I've got a 13A switched fused spur (without Neon) which I would like to change to a 13A
switched socked. Having inspected the fused spur it is connected via only one set of wires ie
earth/neg/pos whilst another 3 wires lurk (unconnected) just inside the wall cavity.
Im of the opinion that the two sets of wires are connected ie earth/earth etc etc. Can I do
this and is the likelyhood that the 3 other wires are unconnected as a result of a
previous occupier no longer requiring the spur? Or is something more sinister at work?

thanks in advance

Chester

Posted: Sat Aug 26, 2006 10:42 am
by honeymonster
It sounds to me like the fused spur could of been used for an immersion heater or similar and that it has been disconnected, that is why there is a cable in the cavity that as been disconnected.

The wire in the cavity will probably be attached to an appliance that is no longer needed and so they have simply removed the wires from the back of the FCU (spur).

You should be able to put a socket where the spur was with no problems, just ensure that the cable is thick enough and that the fuse in the consumer unit is the correct size for the circuit.

so if it is on it's own consumer unit fuse, ensure that the cable is at least 2.5mm and use a 15 amp fuse rather than a 30 amp.

Posted: Sat Aug 26, 2006 10:44 am
by honeymonster
It sounds to me like the fused spur could of been used for an immersion heater or similar and that it has been disconnected, that is why there is a cable in the cavity that as been disconnected.

The wire in the cavity will probably be attached to an appliance that is no longer needed and so they have simply removed the wires from the back of the FCU (spur).

You should be able to put a socket where the spur was with no problems, just ensure that the cable is thick enough and that the fuse in the consumer unit is the correct size for the circuit.

so if it is on it's own consumer unit fuse, ensure that the cable is at least 2.5mm and use a 15 amp fuse rather than a 30 amp.

Posted: Mon Aug 28, 2006 7:01 pm
by CHESTER DRAWERS
Thanks HM,

Much appreciated... I think it was an old electric fire as opposed to an immersion heater ... this is all happening in the lounge!

rgds

Chester

Posted: Tue Aug 29, 2006 1:15 pm
by CHESTER DRAWERS
HM (or all) if you are out there ... Im a little confused now... should I be connecting the three wires (only) from the switch to the new socket (leaving the currently redundant ones where they are or all six ie two earth's together, two negs together and two lives together?

cheers

Chester

Posted: Tue Aug 29, 2006 1:24 pm
by ultimatehandyman
Hi,

if the wires were redundant then I would leave them, are you sure that they are not-

part of a ring circuit or feeding another appliance?

If the wire was redundant to begin with than I would leave it as it has obviously been disconnected because it is feeding something that is no longer needed.


It would make sense to test the wire, or get it tested just to make sure it is not part of a ring main.

Posted: Tue Aug 29, 2006 8:18 pm
by Stoday
If the original switched fused spur was not a flex outlet type (i.e. had no hole in the front plate for a flex) then the redundant wires must have been the feed from the spur.

Leave them disconnected.

Posted: Wed Aug 30, 2006 8:48 am
by CHESTER DRAWERS
Thanks Fella's ... much appreciated!