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I sometimes wonder why I bother with this forum, I didnt ask for advice on each aspect of building control - but I appreciate your concern in helping me find some lights that dont contravene building regs. You may notice I said I dont want to use traditional downlighters, this is because the...

Only £30 each?? You might consider that cheap at london prices, but given I can get a spotlight for around £3 quid from a local wholesaler I'd say these are considerably more.. Anyway dont make the assumption that because the house is renovated and extended that I had a massive budget. I...

I've recently built an extension to the house Im renovating and would like to do the easy option and stick spotlights in but due to the insulation and looking a building control guidance notes this could be a little bit of an issue, everyone suggests I could get away with it or throw the wires...

DOH!

Ignore the where are they from comment, I looked at the URL of the picture and then searched STIS180S David

Hmm I like the sound of plan B, and dont know why I didnt think of that! Ill go look and see if I can find any brick style wall lights with PIR's now! Where are the ones you pictured from?

I'm wanting to descretely mount a PIR in the side of a garden wall to switch some lights on, does anyone know if such things exist? I dont really want to mount a conventional type in an alcove as it will look a **** really. Im not really bothered what switching capacity it has as I can use a...

Cheers, will check it out tomorrow when I have my red book to hand. No livestock in one barn.. other has some stables in it, bonded all steelwork up at the weekend with 16mm² Earth cable.. David

Your saying that I can use the Earth in A so long as I bond the steelwork in B (Which goes without saying!) and assuming the cable CPC is ok for the maximum fault current (likely to be a 4core 25mm² at the moment) then it should be ok. David

erm yeah.. :oops: Embarrasing mistake :o

I've normally only ever had to consider PME / TNC-S supplies, but what is the common practice for earthing in this scenario in a TNC-S scenario.. If you have a TP&N submain terminating in a barn with local earthrod, and the structural steelwork is bonded with 16mm² cable. Say you were...

Length is looking more like its around 10m now, I have checked it a bit better. David

www.ndmeter.co.uk Fit some CT's to the tails, and add the meters in a din rail enclosure. David

If each tail ran in a 25mm Kopex conduit, which were glanded into the meter box, would this be allowed?? David

Pretty big cable required then, certainly bigger than 2x95mm²

from this: to this

Well the cable size they think will do it is 2x 95mm² (From the existing genny) which was 200Kva or 220.. David

Easy and Hard I guess, otherwise I'll never know!

20m Max. Supply cable from a TP+N Genny 440Kva + 10%

What size cable and CPC is required for 630A? SWA Laid on cable basket / ladder rack - No other cables present. Rating for PVC and XLPE would be nice.. Just wanting to sanity check someone elses calcs. David