Spur with two sfcu on it

[Lighting]

Hi all is this ok to run two sfcu like this ?


Or should i run it like this

 

[mickys86]

Not saying you was uptight....but there was a few others.... I never said pic 1 was wrong but I came round to taffys way of thinking.

I can't remember seeing he was going to loop the fcu's I may have read it wrong too

 

[pencilpusher]

Hi all right the socket is on a ring final then going to the 1st sfcu then looping out to the 2nd sfcu o know you can only have 1 socket off a spur but both sfcu will be at 3a so i don't think i need a sfcu by the socket.

Looping! :smile5:

 

[ezzzekiel]

Maybe taffy was thinking that way too which would explain why he said 26a could be drawn, however just going by the ops drawing there is nothing to suggest it would be looped through so in my opinion it was worth 5 pages just to clarify the point that,
yes his circuit is correct providing he wires from the load side of the fcu and not looping from the feed.

Everybody happy with the clarification now?

 

[mickys86]

Maybe taffy was thinking that way too which would explain why he said 26a could be drawn, however just going by the ops drawing there is nothing to suggest it would be looped through so in my opinion it was worth 5 pages just to clarify the point that,
yes his circuit is correct providing he wires from the load side of the fcu and not looping from the feed.

Everybody happy with the clarification now?

Another pint please barman

 

[pencilpusher]

I am always happy! I think it was worth it because he was clearly going to loop from one to the next. If he now understands, then it's sorted.

 

[TaffyDuck]

Maybe taffy was thinking that way too which would explain why he said 26a could be drawn, however just going by the ops drawing there is nothing to suggest it would be looped through so in my opinion it was worth 5 pages just to clarify the point that,
yes his circuit is correct providing he wires from the load side of the fcu and not looping from the feed.

Everybody happy with the clarification now?

It clearly says 3amp to light, 3 amp to boiler so obviously FCU 2 is not fed from the fused side of FCU1. Dont want to go on and on about it but pic 1 IS wrong, Pic 2 is OK. According to both the regs i have listed and your picture of App 15 which clearly shows that Pic 1 is wrong.

 

[ezzzekiel]

It clearly doesnt show any connections at all its a block diagram from which you assume he meant looping from feed and i assume he meant from load

 

[yellowvanman]

Appendix 1 is normative and is thus a requirement. All other appendices are informative, and are provided as guidance.

page 276 of BGB

 

[ezzzekiel]

Did not know that

 

[D80]

Spurring 1 Double socket can draw up to 26 Amps, what is wrong with 2 FCU's drawing a max of 3 amps each?

Or has the ability to use some common sense been lost? 50+ posts on this now, its making a big deal out of something that isn't.

Just what the DIY'er does to alter things at a later date isn't really anything to do with this, they can and do bodge up anything, nothing to stop them spurring of a perfectly good ring final circuit and running several points of that either.

 

[ezzzekiel]

As you say even if the two 3 a fuses were replaced with two 13 a they would still only let the max 26 a allowed from a socket taken direct from the ring

 

[Snapester]

First drawing isn't wrong though as its designed on 6amp max load, the OP should label up max fuse size that should be replaced if it blows in future. But on saying that i do see where Taffy is coming from now and i do agree that if the fuses were replaced with 13a ones then this would show an overload of the cable.
Interesting........

 

[D80]

First drawing isn't wrong though as its designed on 6amp max load, the OP should label up max fuse size that should be replaced if it blows in future. But on saying that i do see where Taffy is coming from now and i do agree that if the fuses were replaced with 13a ones then this would show an overload of the cable.
Interesting........

Why would it be any different at all to a double socket being added?

 

[ezzzekiel]

I agree very interesting topic, especialy as bs76 allows a two gang capable of 26a spurred directly

 

[pencilpusher]

Very interesting, especially as I can only add a single gang socket and not two, one spurred from the other! That would still be a max of 26 amps!