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The TLC calculator for 50m shows that 15 kW through 16mm² is not good enough for lighting because of the voltage drop. You might be quoted for a separate smaller cable for a lighting circuit (cheaper than going to 25mm²). For shorter lengths, a single cable might be adequate for lighting too.

I'm interested as I've been wondering about a gym in the garden with shower and toilet but this is so close to a self-contained guest annexe, I don't expect planners would see the difference. There are different requirements for lighting and other circuits. For lighting you are only permitted...

Glad it's sorted and you've not invalidated the guarantee so you can get another when this oven blows up. ;) I think work on the CU is generally notifiable to the LABC so you did the right thing getting a sparks in. If he is kosher, he will be a member of a scheme that notifies the LABC on...

If the flat has solid masonry walls, the new double glazing will be warmer than the walls. With single glazing, condensation on the glass suggested windows needed opening before walls got damp. With double glazing the windows stay clear so never need opening. If the 'stuff' is against the...

Hands up, yes I go to Wickes website and that is where I got confused: http://www.wickes.co.uk/baseboard/invt/220205/ It is a 9.5mm square edged small board. :?

You might be going for rather few sockets. There are OSG recommendations for minimum number of double-gang sockets in different rooms. FYI living room: 4-8 dining room: 3-5 single bedroom: 2-4 double bedroom: 3-5 kitchen: 6-10 hall: 1-3 The lower numbers are for smaller rooms (up to 12...

From British Gypsum White Book: "Type P: Gypsum baseboard: Boards which have a face intended to receive gypsum plaster. They may be perforated during manufacture." I may have made up the term 'faceboard' from the face paper :?

The next question would then be what is the annual gas consumption? The Keston Celsius 25 has a pretty efficient heat exchanger but the controls are too simple. My consumption is about 50,000 kWh/annum for just the boilers. I am thinking of a Veissmann Vitodens 200W 4-pipe system boiler with...

If the MI state 16A CB max, it seems odd to recommend a 20A RCBO. I doubt the oven and gas igniter could trip a B16 without some fault. My point was that a local consumer unit with 16A MCB is about the same price as an RCBO. Could this be connected below the counter on the switched side of...

I've seen various references to Hotpoint ovens with 1.5mm² internal wiring needing a 16A CB max. I think that is naughty and if an oven cannot be connected to a 'standard' 32 A cooker point, it should have its own fuse built in. An extra consumer unit with 16 A CB might be cheaper and allow...

1.8m double-ended deep bath, missus and bottle of something cold... 1.7m double-ended bath was too small for two - hardly room for water and got cold too quickly.

Is it right to use baseboard if you are going to skim? Is faceboard meant for tape-and-fill?

Being the not-so-proud owner of two of these treasures (should be taken away and buried on a remote island), the Keston Celsius 25 can be installed with very long flues. Please confirm that you don't have any special flue requirements.

The normal recommendation is that a 32 A circuit is usually appropriate for household cooking appliances up to 15 kW plus a kettle socket. This doesn't seem right as the full load for 15 kW would be double that. However, the standard diversity calculation for household cookers suggest your 40 A...

Two layers of 12.5mm SoundBloc. It hasn't got the air bubbles they put in normal plasterboard. If you don't mind losing another 10mm, you can use resilient bars and seal the edges with acoustic sealant. You can also add heavy acoustic mineral wool. This is a sound absorber and not a sound...

My vote is that it is the electrician's responsibility once he has been told. I'd inform the electrician that 250mm of loft insulation will be laid. He then has to design and fit what is safe. Low-voltage (230V) lighting cable is usually fine. He might want to beef up the extra low voltage...

The couple of programmable room 'stats I have experience with both support a manual setting. In warmer weather you can just turn up the temperature on demand when chilly...

It doesn't sound like you have a good seal between dwellings. I'd be concerned about fire safety. Maybe some badly installed downlights have left huge holes in her ceilings. It is probably more important to seal any gaps in her ceilings. Anyway, good luck, I hope you get it sorted out.

In a laboratory it is reasonable to expect that operators are skilled or trained in use of sockets without RCD protection, also portable appliances are regularly tested. Even dedicated household sockets for fixed appliances like freezers and boilers do not require RCD protection (although the...