Am in the middle of decorating bedroom, now for the past few years there has only ever been one socket in bedroom, which just is no good now, I have pulled wires out of the wall, and i now have what you see in the picture.
I want to add 3 more double sockets to this, so am i right in thinking, that i cut in to one of these wires, connect up first socket then loop to next socket and then the next, and the other wire goes to the last socket to complete the circuit.
Hi Willo. Turn off the power first , or isolate the relevant ring main and check sockets are not live. Firstly i am not a qualified electrician so any comments are at your risk. With 2 cables going into the socket would suggest it is on the ring circuit ( just from your photo though it could be , but shouldnt be and unlikely to be, that you have a socket spurred of the ring main circuit and another spurred off that) Once youve determined that the socket is on the main ring circuit you can put a new socket onto either of the grey cables. Where you want the sockets going may determine which cable you use but you could have one on one cable and the other 2 on the other cable. The other option you have is a combination--- with a socket or 2 just spured off the cable and say 1 on the ring. The old rule of thumb was that if you had say 5 sockets on your upstairs ring main circuit then you were allowed to add up to 5 spurred sockets. For adding sockets looped on the ring main 3 more shouldnt be a problem for a domestic loading (power use) situation.If you spur off you will need junction boxes where you break into the main cable. You may also find the wiring colours have changed so will have to do your homework
Please dont read this as a criticism or like i am preaching but as i am sure you understand electricity can be your best friend or your worst enemy.
First, if you do this you will be breaching Part P of the building regulations. Unless of course you are a part P registered electrician or you contact planning, tell them your plans, have a spark inspect your first fix then your second fix and do all the necessary measurements and certification.
Second, you can assume this is on the ring main but that is possibly wrong and potentially dangerous if not the case. It might be a spur. There are ways of verifying if it is the ring main but in all honesty if you are asking on here i would not be confident that you could do it correctly.
If you google it there are plenty of websites that describe how to do this with pics and description.
However IF it is verified that this is your ring main you would take one of the cables to your first socket then twin and earth to the next and the next until you complete the ring by continuing with the second of the cables from the original socket.
Also any new wiring, even on an existing circuit, that is buried in a wall less than 50mm deep and that circuit needs to be RCD protected.
Fish, sorry but however well intentioned bad advice is bad advice. No rule of thumb for spurs. The rule was 1 spur from 1 point on the ring main. You can not double up on spurs from one point on the mains. And using junction boxes (which will most likely be hidden) to tap off a ring main is a huge no no. Also the loading is nothing to do with how many sockets there are it is down to floor area that it covers.
No you have it all wrong, You pick up the yellow pages or Google and employ a local electrician, Life is not a rehearsal, you obviously do not know what you are doing if you have to ask.
Also the loading is nothing to do with how many sockets there are it is down to floor area that it covers.
JIB Approved Electrician of 28 years.
We are talking 13amp wiring here, so if he has 50 sockets all together its ok if they are all next to each other?. Me thinks the wiring would soon warm up and no need for central heating.
I honestly was not being condescending just giving you the facts.
I am afraid I can not do it as I am maintenance based now so not Part P registered (this is only for domestic installations.
Would you believe, time served JIB Approved Electrician with all my city and guilds and NVQ level 3, I am not allowed to carry out electrical work in my own home.
There is a spark on here who comes highly recommended but i cant for the life of me remember his name. I am sure he will be along or someone will hook you up with him.
Zipper, its 30 amp for a ring main, 13 amp per plug top. Believe it or not its not the number of sockets it is the load on each socket, you could have 50 sockets but your loading would not change. It is what is plugged in. So design says 100m2 of floor space for one ring main. Your limiting factor is your fuse/breaker which would blow/trip at 30/32amp well below the current carrying capacity of the cable and well within the thermal limits. In practice you could plug just three items of 13 amp each into a couple of double sockets. Load 39 amp. Circuit trips. Theoretical design and practical loading, you have something called diversity factor which has fully prescribed calculations.
...First, if you do this you will be breaching Part P of the building regulations. Unless of course you are a part P registered electrician or you contact planning, tell them your plans, have a spark inspect your first fix then your second fix and do all the necessary measurements and certification...
Ignoring BS 7671, "competency" and the other sound advice given. Extra sockets on an existing ring are classed as "minor work" (unless in special locations), so don't actually need notification to Building Control under Part P. Source: http://www.niceic.com/Uploads/File1247.pdf
little pob, good find on the link. Just shows know alls dont necessarily know all. Certainly never had this explained as non notifiable to me. I suppose the caveat is to follow the regs BS7671. Possibly one socket is permitted but no more. There are strange conditions, you can replace one damaged cable on one circuit yourself but not two cables. Damage a single cable on each of two circuits and you cant replace yourself.
Best advice I would offer is 'Get a professional Electrician ' and don't take chances. Always remember Electricity is a great slave but a deadly master.
