Wiring in new light and switch

[yellowp]

Hi all,

Last year the CU was replaced and the sparky kept all the lights on one circuit as they were on the old fuse box. The light in the loft and the light under the stairs were wired in before we moved in and are done as so;

Live from CU to switch, switch to light and back to CU. Neutral from CU to light, back to CU. Click here for a diagram...

These were left as is and put on their own MCB in the CU. I've put up an outside light and can't find any easy way of breaking in to the main lighting circuit to connect it up. Is the method I described ok? Should I just replicate how the two independent lights had been done previously?

If so, where is the best place to connect the light in. If it's directly in to the fuse box (the new switch is under it and the outside light 18 inches from that) is it safe to do with the main RCD off?

Thanks for any advice you can offer,

Jim

(Someone suggested I just put a plug on the end and be done with it - I'd rather do it "properly", but for safety and ease would it be better? Done plenty with main circuits but not needed to touch the lighting before.)[/url]

 

[delmel]

I am not sure who put that in that way.

Ring main - Cables return to CU
Radial Circuit - Do not return to CU and are generally a larger cable

Lighting circuits - Do not return to CU. They finish at point of light or point of junction.

If all the cables were connected that way the light would be permantly on.