Spur or extend ring?

[str]

I need to get power into a cupboard, where I plan to house all the tv equipment - sat box, dvd, etc - at least 4 plug sockets required, probably better to have a couple spare.

I have a double socket just outside the cupboard, so reckon I could take a spur off this (I dont think there is a spur off this already) but can i take power to say, 3 double sockets from a single spur?

Or, would I be better off extending the ring from this socket and is it feasible to increase the ring by another 3 doubles?

If I was to extend the ring, I would need to join a cable permanently, cant use a junction box as it wouldn't be accessible, or if I am able, would it be best to replace one side of the ring (between two existing sockets) with a new length of cable giving me the required length?

Any advice appreciated

 

[ColJack]

no you can't have 3 doubles off one spur.. unless it's a fused spur..

yes it's best to include them on the ring.
yes it's feasible to add 3 doubles to the ring as long as it's not at it's capacity to start with.. ( and as long as the Zs readings are within the acceptible limits.. )

if you join in the backbox of the existing socket, then it's accessible ( you can take the socket front off to get at it..)

yes it's always best to replace with a cable that's long enough.... this eliminates one possible point of failure..

 

[str]

cheers for that coljack

Whilst I consider myself capable of limited electrical work, such as this, ( my dad was a spark so I picked up a few things) the terminology goes over my head!

what do you mean by "Zs readings"?

The ring is the downstairs ring, so feeds a hallway, sittingroom, diningroom and bedroom - 11 double sockets at present and I would be adding another 3 - havent looked to see what rating the MCB is for the ring but I assume it will have enough capacity to take the additions?

hadn't thought of joining in the back box but might go down the route of a new length of cable if the floors are up anyway

 

[ColJack]

Zs is the earth fault loop resistance reading..

it has to be sufficiently low so that, in the event of a fault to earth, there is enough current drawn to operate the protective device within the time limit allowed for safety..