Wiring a sun room - advice?

Road-Hog

Constructing a 4.1 x 3.3m approx sun room off a kitchen/dining room at the moment,, I want to put in 3 double sockets and 6-8 spot lights in the ceiling. My questions are

1. Instead of trying to tap into an existing lighting and socket circuit I'm considering going all the way back to the 'Consumer Unit' for both and wire them into an existing MCB/RCD, is this correct approach?

2. With regard to the sockets - is it just a matter of connecting them in series i.e. or does it have to be a ring circuit

3. What size cables should I use, for sockets I'm thinking that 2.5mm sq, the distance from CU to room will be approx 14m, for spot lights should I use 2.5mm also?

maxamillius

by all means if you can get back to the consumer unit,do so!
make sure there is enough room for another 2 mcbs in it first,one 10 amp mcb for lighting and one 20 amp mcb for sockets,which must be on the rcd side!

sockets can just be looped one after the other no need for a ring,in actual fact ring circuits are no longer allowed?might need some one to clarify that!

2.5mm t+e is fine for the sockets

1.5mm t+e is fine for the spotlights!

Road-Hog

maxamillius wrote: »

by all means if you can get back to the consumer unit,do so!
make sure there is enough room for another 2 mcbs in it first,one 10 amp mcb for lighting and one 20 amp mcb for sockets,which must be on the rcd side!

sockets can just be looped one after the other no need for a ring,in actual fact ring circuits are no longer allowed?might need some one to clarify that!

2.5mm t+e is fine for the sockets

1.5mm t+e is fine for the spotlights!

Thanks for the above, most difficult task is routing from CB to room...!!

mazthespark

could you put up coving to disguise the cables running from consumer unit to the sun room? or use swa in the floor may be another option depending on situation.

M cebee

maxamillius wrote: »

by all means if you can get back to the consumer unit,do so!
make sure there is enough room for another 2 mcbs in it first,one 10 amp mcb for lighting and one 20 amp mcb for sockets,which must be on the rcd side!

sockets can just be looped one after the other no need for a ring,in actual fact ring circuits are no longer allowed?might need some one to clarify that!

2.5mm t+e is fine for the sockets

1.5mm t+e is fine for the spotlights!

they're being phased out anyhow for domestic

probs regarding continuity( or overcurrent protection) on the final circuit

will make it easier to protect the power cord and the final circuit together at the distrbution board if it ever happens

they'll still be used for distribution circuits in places and by dsos for the efficiency over radial

Bruthal

M cebee wrote: »

they're being phased out anyhow for domestic

probs regarding continuity( or overcurrent protection) on the final circuit

will make it easier to protect the power cord and the final circuit together at the distrbution board if it ever happens

they'll still be used for distribution circuits in places and by dsos for the efficiency over radial

Should of been gone years ago

M cebee

would be sorry to see the ring go


still very handy for VD and loop-impedance on longer runs with a few sockets

circuits are often derated to 20amp ,or even 25 for 4sq rings- you're covered then if the ring breaks