Adding new sockets to a ring main?

Question

I want to add some new sockets using two junction boxes to continue the circuit. Some people have said it's better to do this from socket to socket with no junction boxes.

That would be more difficult though. UK answers only please

Answer 1

Yes, it is more difficult to do it from socket-to-socket BUT it does have the advantage that when things aren't right at some point in the future, it's easier to find a loose connection at a socket than somewhere under the floorboards.

If you do opt for JB's then may I recommend marking the floorboards with marker pen to indicate their position?  

Answer 2

If I understand you correctly.

You are better not useing additional junction boxes.

First-You must be able to access all junctions, that's the law.

Second - everytime you create a junction you create a hot-spot, this lowers the electricity available at each additional plugin.

It doesn't matter if you are in the UK. the Congo or here in Canada.

Safe wires are safe wires, and everytime you add-on, you lower your wireings ability to do the job correctly  

Answer 3

There is no limit to the number of sockets in the ring, you can wire a new socket from each individual socket this is called a 'spur' and you can only have one spur from any one socket.

You can break into the ring anywhere without using junction boxes.

Answer 4

You are not allowed to do the work under new government regulations unless you are a fully qualified electrician.

Answer 5

I would have thought it would depend on the locations of existing sockets  and intended ones and where all the relevant wiring runs. All other things being equal, direct connection between sockets is theoretically simpler.

Having said all that, not sure what the legal situation is. Couple of years ago new regs came in, but I can't remember if you're allowed to put in spurs but not rings. Try Googling for that.

Answer 6

It would be better from socket to socket but it makes more mess.

Nothing wrong with using junction boxes.

Answer 7

You are only allowed one socket unit on a spur from the ring main, but unlimited sockets actually on the ring.  This is because electricity is supplied to any ring sockets from both directions, but only from one for a spur socket.

The reason you use a socket to attach the spur to is simply to spare the expense of a junction box and the upheaval to the decor.  You still need easy access to the junction box to check for faults or to investigate overheating there.  Make sure that the junction boxes are correctly rated - ideally 20A or 30A (the value of the fuse or trip of the ring main circuit).

It is also better not to break the ring circuit if you can - just strip the wire rather than cut it.

Also make sure that any work you do is either tested by a qualified electrician or it was done more than two years ago if anyone asks.