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Need to think about that - are you suggesting that even if I leave the existing 16mm T&E and just upgrade the CU, there might be an issue due to the 16mm earth being undersized? In other words, upgrade the CU I have to upgrade the meter wiring. I can only see 25mm cable in singles on TLC direct...

We have a 60A wylex CU with meter tails being T&E (16mm probably) length 7m out of our flat through a utility room and into a common meter room, all circuits on 60a fuses and isolators. I am (subject to my LBA approval :-) upgrading the CU as part of a part-rewire to a Hager 17th ed, which is...

Thanks, I realised the stupidity of what I said due to 13A sockets being on 32A circuits so I edited out that part of my original post :-). btw. the dimmers can work off any circuit: they are flush mounted connected by control line (see http://knxshop.co.uk/catalog/imagebank/large/105800.jpg...

I am working on a spec for our property. One large room will have a single lighting circuit (6a radial on 1mm csa, oval in plaster) and single power circuit (32a radial on 4mm csa, oval in plaster). We are putting in 4 floor lamps that can be dimmed by home automation (KNX) (max capacity of the...

Thanks for all the replies - but I am not going to put a false ceiling through a 35sqm room or 100sqm flat just for two small issues like this, too much cost and hassle (even if we were aesthetically okay with it). It looks like for the kitchen bulkhead, I will just need to fashion a cable...

Heh! Your advice much appreciated. The ceiling is certainly structural - I thought a shallow chase for a short distance might be safe though. I guess we have lived in places with higher ceilings in the past, and since the lower ground floor is a bit darker (longish layout, no side windows, but...

We are on the lower ground floor, ceiling height is only 2.4m so it is non-starter to lose any height with a false ceiling. All our lighting is wall based otherwise. The dining and kitchen areas are both open plan in one large 35sqm L-shaped room, and we want some overhead light for these two if...

I suspect the answer is no, but I'll give it a try. I'm redoing my flat, constructed circa. 1972, ceiling is concrete sitting on pylons, I'm on the lower ground floor of five floors. The bugger is that I want to put a pendant light in the dining room, and put a bulkhead (with downlights +...

Thanks for the replies. The existing bitumen may have leveller under it, as it does have some crumbly bits. It would be a nightmare to try and lift all of that because as you can imagine it is embedded in the ribs and uneven slab surface. I was also a bit worried about putting pruf over the...

Our lower ground floor flat (built early 1970's) is slab and screed. We pulled up the 70mm screed (in which water, radiator, electrics, phone and television were all routed in pipes) in half (40sqm, one large L shaped room) as part of a gut and refurb (moving kitchen, redoing plumbing, rewire...

Thanks, I am not into chance decisions - only if there is a no (or negligible) risk solution that can be used. I think I will just go for 65mm, the main downside is that it will create a small step at the door into common area of the building.

Hi, I am renovating a flat, floor is concrete slab on ground, over which there is 70mm screed - we are removing 70mm screed (and all the service pipes within it) and re-laying with 20mm insulation (and new water plus elec service pipes) and wet UFH clipped in this then rescreeding. I'm sensitive...

Hi, I am doing a very small bit of DIY to render an external wall in the back of our London flat. So far, I've had to remove some of the top bricks and scrape out a tree that was beginning to grow (it had bedded itself in the mortar and already leveraged up the top row, trunk outside the...

Hi, I am looking at replacing 4 patio doors with JELD WEN Clifton product - the quality and guarantees look really good, the product comes supplied ready to drop in in frames, and they have to be wooden products due to the nature of our building. I have a reliable builder who I'm going to ask to...

Thanks, exactly the kind of advice I was looking for!

I am probably confusing it. I'll do some more reading. As for (a) and (b), this is kind of what our builder did about 3 years ago on another flat renovation: he did all the wiring, and the electrician came in to check (fix a few things), test it and then certify it. But this could have been...

Hi, We are redoing an entire open front room of our lower ground flat (room itself is ~25sqm), and as part of it, moving a kitchen from one side to the other, but want to make best use of our very limited funds. We will rewire the room entirely. I'm thinking about doing the rewire myself...