conservatory wiring

thirlmere · Posted: Thu Mar 31, 2005 4:13 pm Post Subject: conservatory wiring

is it ok to extend my ring main from exsisting wall double socket,put 3-4 more sockets and then spur off and put a 5 amp fuse box and then add lighting off that circuit. think its ok just need some advice

ban-all-sheds · Posted: Thu Mar 31, 2005 5:23 pm Post Subject:

How do you plan to extend the ring from one socket? Will you be able to replace the existing cable going to the next socket, or are you planning to join the cables somehow?

Assuming that's not an issue, then provided the floor area served by the ring does not exceed 100m², and provided you aren't adding sockets in what Part P of the building regulations defines as a special location, and provided you test the circuit afterwards, then it will be OK.

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mapj1 · Posted: Thu Mar 31, 2005 10:36 pm Post Subject:

do it like this

except make one of the sockets the switch fuse that controls the lights.
Make sure cabling follows lines of least surprise (see reference section for permitted routes), or use conduit or armourclad if you really cant.
Come back if this makes no sense.

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brumtrician · Posted: Fri Apr 01, 2005 9:49 pm Post Subject:

when i do conservtorys i run my new ring around the conservatory with a switched fused spur in the circuit for the light/fanlight switch with a 3amp fuse in it. Then the 2 ends of this ring i put into the back of socket on the existing ring you want to extend. I leave one end of the existing ringmain and add one end of the new ringmain into the socket screw teminals then the 2 legs left i join with crimps and put heatshrink over them and leave them in the back of the socket box. Have only done this on double sockets so not sure if there would be enough room in a single socket backbox.

Just make sure you use a decent pair of rachet crimpers and not those cheap nasty things like plyers

delmel · Posted: Sat Apr 02, 2005 2:45 am Post Subject: Conservatory

Ask yourself what your using it for. Electric heaters ? a no no. Lighting and low powered objects should be fine, but recommend you put everything used on the circuit you intend to use the clamp it to see how much power your drawing. Then decide

thirlmere · Posted: Sat Apr 02, 2005 3:28 pm Post Subject:

thanks guys thats a great help i notice one of you chaps said not to run electric heater off this idea i am looking to put a heater in how should i wire that in to.

delmel · Posted: Mon Apr 04, 2005 10:35 pm Post Subject: heaters

Once again depends on loads already drawn and expected loads required. What sort of heater and rating are you proposing.

mapj1 · Posted: Mon Apr 04, 2005 11:59 pm Post Subject:

For almost all loads follow the scheme in the figure I posted, and loop into the house ring. Good for most situations. (Or if you really want to push the boat out then run a dedicated 30A 4mm radial from a new way in the fuseboard.)
For less than 13A total ever, put the whole conservatory on a fused spur.
Just add up the wattages of what you think want all on at once, and you will be able to see what you need to wire up..

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