Spurs off SWA

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Hi all,

I have been asked to fit a few 5 pin 16A three phase sockets along a run of now defunct 10mm SWA to "reuse" the original cable. [Might as well!!]

What i want to do, is to fit adaptable boxes in the required places, and then a 1 foot long "spur" if you like, down to each socket. Only thing is, what is the best way of doing the connections in the box?? If the cable was smaller, i would just use 1 in 2 out din rail terminals to connect up the spur. I could i suppose, use din rail terminals linked with jumpers, and it would certainly look neat, or, instead, i could just fit lugs to the ends of all the cables and bolt them together in the box and heat shrink them, but this seems a bit of a "botchy" way of doing things.

What would you all do? I could get proper junction boxes, but why do everything crammed in a tiny space when you could have a relatively large adaptable box to do it all in.

Oh, and yes, the feed to the original 10mm SWA will obviously now have an MCB suited to the CSA of the small spurs so i do not have to have an OCPD at every spur!

What you think???

john

 
You wont have much slack to terminate the cables, sounds like it would be easier to slacken off the fixings and move the cable along.
thats what I was thinking, you will prob need at least 6" at every joint, I'd like to have more to work with TBH.

you could then terminate them into an isolator for your socket outlet, thus killing 2birds with one stone so to speak.

 
8x6 or size to suit adaptable box have to crimp one side to get working length

din rail connectors for 10mm are readily available

Appleby Adaptable Box Knockout Box Galvanised 300 x 300 x 75mm | Screwfix.com

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Hi All,

I can move the cable along with no problem at all, you see, i did not explain very well. The cable is not fastened to the wall yet!!

Here is what i am up to!!!!I had to install a DB for them in a part of their building that had no electricity, but to help them out, i re-used cables and the DB that i had previously removed for them from another part of the same building.

Now they have their nice new [used!!] DB installed, they decided, "Oohh, it would be good if we could have some sockets all along there, might as well use up some more of the old cable!!" so now i am stuck with trying to wire 16A sockets to 10mm cable.... If it was 2.5, it would be a simple in and out of each socket/isolator. Clumpy great 10mm is not so easy!!!

I do not mind doing it, they do a lot for me too see!!!

john...

 
doddle then if cable not fixed. 10mm is tiny

---------- Post Auto-Merged at 15:05 ---------- Previous post was made at 14:59 ----------

2 10mm's will be tight into socket so same arrangement in adaptable box then 10mm into socket for maximum use of "free" cable or wack in some 2.5 off floor of van :Applaud

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mmm!?!?!?!?!?!

what colour is this cable? RYB or BrBlGy

is it legal to install cable that no longer meets the requirements of 7671?

or are you simply adding some sockets onto an existing circuit? ;)

 
its not illegal to install old colours
are you sure?

you are not allowed to install a new circuit protected by 3871, so why would you be allowed to install a circuit with materials to a previous standard?

all new installs must be to the current edition of the regs,

RYB cable does NOT comply with BS7671 2008/2011 so why do you think it would be legal to use it for a new installation?

---------- Post Auto-Merged at 16:38 ---------- Previous post was made at 16:37 ----------

Mmmm, Yes.... the cable is the old colours, so i suppose really I should not be using it... Well spotted Steps!!!john..
but,

like I said, if it is already feeding a 16A socket and you are only adding some more onto it...............

 
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