To spur or not to spur?.....

[Dave OCD]

But using that logic if you fitted a 13a FCU right next to a socket which was on the ring everything fed from the FCU would be a spur off a spur etc.?

 

[westward10]

The two socket outlets need to be both connected from the fused side of the fcu.

 

[AJshep]

But using that logic if you fitted a 13a FCU right next to a socket which was on the ring everything fed from the FCU would be a spur off a spur etc.?

Yes it is, but think the point is that at least that's acceptable because the cable will be fused down to 13amps, to avoid any overload.

A spur from a spur (even if one of those is a FCU) is not.

 

[Toneyz]

Can't you see option two is a multiple outlet spur?

If I'm right fused connection unit on the ring F.C. fused spur from the load side unfused spur from the supply side-could be a bit tight with four cables.

 

[Dave OCD]

The two socket outlets need to be both connected from the fused side of the fcu.

Yes I'm sorry I was visualising this one as the blanked off point being the spur when it's not, but there would be no harm in going off in 2 directions from the outgoing side of the FCU as long as you could connect 4 x 2.5mm T&Es properly within a single box, I'd want a 47mm one for that.

 

[Dave OCD]

There used to be [and still is I think] a picture in the OSG showing sockets via a FCU beig fed in 1.5mm. I wonder if anyone's ever done that ? In theory fine but I like 2.5 or sometimes 4mm in socket terminals.

 

[westward10]

I have spurred off a ring final in 1.5

 

[Dave OCD]

Maybe to a fixed load and not another socket ?

 

[westward10]

Fcu or a one gang socket.

 

[Dave OCD]

Fair enough, I do like a bit of 1.5 but normally stick to using it for larger lighting loads or a radial to a small NSH for example. Good for boiler supplies too.

 

[Martyn Fletcher]

I'm all ears (|oo|)

 

[littlespark]

So the majority think it should be both spurs off the load side of an SFCU? That was my initial thought.
The back box is 32mm, but below the surface of the plaster so maybe close to 40. Should be ok for 4 cables.
Sorry if I confused anyone with the set up. I'll draw a diagram next time

 

[DPG]

There used to be [and still is I think] a picture in the OSG showing sockets via a FCU beig fed in 1.5mm. I wonder if anyone's ever done that ? In theory fine but I like 2.5 or sometimes 4mm in socket terminals.

1.5mm T&E from load side of a 13A FCU to a 13A socket sounds OK to me.

 

[happysteve]

Here's a thought experiment:

Imagine there was another blank 1G box on the RFC, maybe 3 feet away from your first one. You'd presumably not have a problem having one unfused socket spur from each of these?

Now reduce the distance... a foot apart, still happy?

2x 1G back boxes adjacent to each other (with a part of the ring between them)... Still happy?

How short does the distance between spur points have to be before you become uncomfortable? An inch? You could fit both in the same back box.

What about a length of zero? Two spurs, off the same point on the RFC, using 32A (or higher) 4-hole connectors?

Just a thought experiment

 

[littlespark]

Um... I've done the job now. I put the existing spur on the feed side of the SFCU, and the new spur, in 1.5 to a double socket from the load side. Right or wrong, its done now and I cant see the difference from this, or a spur off the back of a single socket and running an extension lead from it.