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Have a look at this http://arxiv.org/ftp/physics/papers/0611/0611063.pdf

CPC = circuit protective conductor. Or just earth wire.

Does your lighting circuit have a cpc?

There's something like the chicken and egg scenario emerging here. I see your point though spark 123, just ask the guy what's going on. Challenge him over this ETE business though.

Taylortwocities answered this with the second reply. end of story!!!! EAW 1989 regulations prohibit live work except in special circumstances.

Check with the NICEIC by all means but, in all fairness he may be waiting for his assessment visit. He may want to use your job. Then if there's a problem it will cost him. Never heard of ETE though

Have a look in the WIKI. Diagrams easier than words http://wiki.diynot.com/electrics:lighting:lighting_circuit_layouts

100% agree Adam

Just an observation. I see you have used Grey as CPC and black as neutral, although sleeved G/Y and blue, I always use Black as CPC and grey as neutral,sleeved of course. Black was to be Disassociated with neutral.

What size SWA are you using? Just use a reducer from 32 to 25. IMHO Swa cable without glands is really sloppy.

450mm socket height. Section 8 approved document M applies to new builds not rewires, AFAIK TLC do a nice range of oval trunking. Here http://www.tlc-direct.co.uk/Main_Index/Trunking_Pvc_Index/index.html

You've cut holes in a timber shelf for spotlights? Whats the lamp rating in Watts? Whats the transformer rating in VA? What 4 gang 2 way switch did you use? What cable did you use? From what you say you have switched the 12v supply, so there is no switch or means of isolation on the 230v...

Just read the whole entry in the brown book page 93

Don't think you can get single core SWA can you? I've only ever seen AWA. Wait for IT :cry:

BS 3871 had rather low breaking capacities didn't they, although I expect I'll be corrected. Nice PDF file here. http://www.beamainstallation.org.uk/assets/pdfs/CircuitBreaker.pdf

Think thats 521-02-01

Hard wiring a wireless system??? 1 You say wired, with communicator, do you mean dialler. 2 Special smoke heads powered from panel 3 hard wired and mains powered with battery backup. all here. http://www.tlc-direct.co.uk/Main_Index/Alarm_Index/index.html

Beat me to it

No requirement with rewires, new dwellings only but, not in a worse position than they currently are. If you do install at the prescribed heights it's 450mm to lower edge of sockets and 1200 to upper edge of light switches

BS 7671 523-02-01