Extending a ring circuit ?

Emtpencil · Posted: Wed Jan 14, 2004 1:48 pm Post Subject: Extending a ring circuit ?

I need to extend my ring circuit into my new extension, on the rear of my house. However all the upstairs of my house has laminated flooring, making it impossible to access under the floorboards. I am intending to extend the circuit from the room next to the extension, from a socket there. However where do I situate the 2 junction boxes\\\' ?

Thanks.

ban-all-sheds · Posted: Wed Jan 14, 2004 2:34 pm Post Subject:

First of all, please try to avoid using JBs. If you are extending the ring by getting at a socket, and using JBs to connect to new cables, then surely you can run the new cables directly to the socket (and the next one)?

Secondly, laminate flooring is difficult to deal with.

See here

Budget for replacing the floor.

gyeulet · Posted: Wed Jan 14, 2004 2:40 pm Post Subject:

What's the problem with using junction boxes? Is it unsafe, even if they are properly (or even over-) rated for the size of cicuit?

il78 · Posted: Wed Jan 14, 2004 7:07 pm Post Subject:

IEE Wiring regulations state that connections other than compression (ie, crimps) should be accessible......blar blar......I've used JB's under the floor (within reason) and I see no real problems (my opinion) as long as the connections are good.......

Gussie · Posted: Tue Jan 20, 2004 1:11 pm Post Subject:

That's interesting... I was intending doing a similiar thing. I need extra sockets in a room but my wires all disappear into concrete floor & ceiling so I've no way of knowing which is the next socket in the ring.

I intended to break into the ring by removing a socket completely and connecting each of the 2 cables to its own j.b. Then connecting the new sockets to these.

Is the problem just to do with access ? If I mount the j.b.s on the wall (which is possible as they will be under a fitted desk) will this fulfill the regulations ?

Thanks.

il78 · Posted: Tue Jan 20, 2004 7:19 pm Post Subject:

It can be done, but you can use one these to hide them !

ban-all-sheds · Posted: Tue Jan 20, 2004 8:25 pm Post Subject:

No need to hide them - use ones which look half decent:

dingbat · Posted: Tue Jan 27, 2004 7:09 pm Post Subject:

Gussie wrote:

That's interesting... I was intending doing a similiar thing. I need extra sockets in a room but my wires all disappear into concrete floor & ceiling so I've no way of knowing which is the next socket in the ring.

I intended to break into the ring by removing a socket completely and connecting each of the 2 cables to its own j.b. Then connecting the new sockets to these.

If it's extra sockets in a room, why not just spur them off existing sockets on the ring?

As for not knowing the sequence of sockets why not find out? Isolate the ring then disconnect all your appliances and dismantle one of the sockets you want to use. Then disconnect another nearby socket and by testing continuity work out which cable connects between them and check that there aren't any other sockets connected between them. You can then effectively get rid of that section of cable and wire in your new sockets between them, thus restoring ring continuity and using no JBs at all.

Just a suggestion

Emtpencil · Posted: Mon Aug 09, 2004 12:51 pm Post Subject: Extra sockets ?

Therefore can I extend the ring with crimps which will be plastered into the wall ? Will I need to cover the crimps with insulation tape due to the moisture of the plaster ?

securespark · Posted: Mon Aug 09, 2004 11:24 pm Post Subject:

Best to make these accessible too. Sink a box in the wall, crimp the connections and fit a blank plate - that way they are easily accessible in the event of a fault.

Emtpencil · Posted: Tue Aug 10, 2004 12:59 pm Post Subject: Extending a ring circuit ?

Cheers securespark, thats sorted me out m8, nice one.

2scoops0406 · Posted: Sun Sep 19, 2004 10:18 am Post Subject:

securespark wrote:

Best to make these accessible too. Sink a box in the wall, crimp the connections and fit a blank plate - that way they are easily accessible in the event of a fault.

Firstly, thanks I should have performed a search, prior to asking my much repeated question. But I want to crimp the existing cables, but I definitely want to plaster over the crimped connection.

Question 1) when crimping the cables, do I put one cable each side of the crimp, or both cables in one side of the crimp, the advice posted so far seems contradictory. (This is presuming I use yellow butt crimps)

Question 2) Do I need to put the cable in capping, or some other box.

Question 3) If I don't use a box, should I tape around each crimp with insulating tape.

THe reason I ask is that obviously the plaster will be wet, do crimps provide a totally waterproof seal ?

Thanks.

andy · Posted: Sun Sep 19, 2004 3:45 pm Post Subject:

when you say crimps, you mean a standard reb/blue/yellow insulated crimp?

2scoops0406 · Posted: Sun Sep 19, 2004 4:17 pm Post Subject:

Yeah as in like these :-

http://www.screwfix.com/app/sfd/cat/pro.jsp?id=75317&ts=10590