Spur a new twin socket from existing socket

As a rule of thumb for rings, unfused spur lengths should not exceed 1/8 the cable length from spur to the furthest point of the ring. The total number of fused spurs is unlimited (ie connected via a fused connection unit) but the number of unfused spurs should not exceed the total number of socket outlets and items of stationary equipment connected to the circuit. A non-fused spur can only feed 1 double or single socket outlet or one permanently connected item of electrical equipment. From what you are saying, if the socket you are connecting to is part of the ring circuit and not already a spur in itself, then you should be able to connect your new spur (double socket) with a 2.5mm Twin and Earth cable for a distance of 5m. Please note that although this would not be notifiable work under part P of the building regs, it should still be tested and certified with a minor works certificate and carried out by a competent person.

Firstly before you start you need to register your intent to carry out DIY electrical work with your local authority and pay their part P building regulation consent fee. See links below. If you don't register the works then your effectively breaking the law and could be fined up to £5000. http://www.donttakethep.co.uk/

Hi Mark, I run a building company and would never let anyone other than my qualified electrician touch any electrics as even if you do your little bit correctly you will invalidate your home insurance the moment you touch it. A qualified Electrian will check your whole system and provide you with a certificate which is just like an MOT and even has recommendations on it. All this would probably cost you about £130. That's a small price for your family's safety..... Why chance it? All the best Jeremy