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Nothing wrong with flex for fixed wiring, although I believe it must be at least 0.75mmsq. Sorry, can't remember the regulation number or be bothered to dig it out right now. Hopefully someone else will be helpful enough to check up on it.

If the structure doesn't require BC notification then you only need to notify the LABC before the electrical work starts, unless there are other controlled services such as foul water drainage that may be required. However, surely the building and electrical works will go hand in hand, rather...

If the problem disappears with a particular MCB switched off and yet still occurs when there are no loads on the problem circuit, it's very unlikely that the RCD is to blame. More likely is that you have a Live-Earth fault somewhere on the circuit, but unless you're handy with a multimeter and...

It's hard to tell if the OP is expecting something that's impossible with the existing wiring, or referring to a feature of some PIRs whereby the output can be overridden by flicking the supply off and then on a couple of times in quick succession. IM, what happens if you turn on the switch...

It may be better to run a submain in SWA to a small weatherproof DB at the bar containing RCBOs. The submain can be fed from a non-RCD way in the house, or via Henleys and a switchfuse if that's more appropriate. These issues aside, your asking of such basic questions makes me wonder if you...

If the original socket was part of a ring final circuit, the wiring has been installed properly and is definitely of the correct size and type, what's been done should be fine. EDIT: riveralt is right in that it's also permissible to take a spur, which is what has been done, from a radial...

Just drill a 20mm hole in the box lid and fit a suitably sized plastic compression gland.

I don't want to sway this topic too far from the original debate, but it's my personal opinion that if you supply the goods, and especially if you're all too willing to put a markup on them, you are responsible should they become faulty. Having been through a huge amount of hassle with Ultraheat...

I sympathise with your situation, although it seems a bit unfair that you put a markup on materials, yet you're unwilling/unable to offer backup to the customer when said materials fail. That aside, if you do get taken to court by the builder, and you're confident that you can prove the leaks...

I guess you should be able to chase fairly deep into the floor. You don't want to go so deep that you puncture any damp proof membrane that might be down there, nor so much that you separate the slab in two. Might be worth asking on the building forum as to how deep the slab and screed is...

There's no reason you shouldn't run pipework in the same cupboard as your gas an electricity supplies. After all, pipework isn't designed to leak, and it could just as easily leak anywhere else in the house that happens to be near the electrics. There's some information on maximum permitted...

You can use it to pump your stored gravity fed water, but not mains water. It isn't what I'd call a 'wholse-house' pump.

I guess I should have figured that would be the case - different trade, but same story re sale of parts! :roll:

To be fair, it could be built into the tap, although I suspect not - otherwise he probably would have had the sense to include a drain cock too, so that the system can be properly purged of water during the winter.

Except that there is no requirement to bond kitchen taps. You would normally run a PEB conductor from the main earth terminal to any incoming metallic services such as water or gas supply, but it doesn't look to be that the pipes in the picture are extraneous conductive parts. Oh, and that...

Surely that's still less wasted heat than that given off by the huge surface area of a DHW cylinder, even with lagging? The reason I'm inclined not to believe that it's an issue with the pipes being clipped together is that there is a much larger difference in temperature between the...

Maybe not necessary, but you and your electrician will be glad it's there, as it means you can backfill the trench now and worry about pulling the cable in when you're ready. FWIW, you should easily be able to achieve 10kW with 25mmsq @ 50 metres, if not more. It may even just be within the...

Simon, don't be surprised by the attitude of some of the forum regulars, it's nothing unusual although almost always totally unnecessary. Although some of what you've said is wrong, I don't see how or why it should have offended anybody. Sounds to be like you have something against combi...

Maybe not approached in the most personal manner, but the information was all correct. rippa700, I admire your efforts to save a few quid, but if you think that it's OK to bury T+E over a 50m run in plastic duct, then you probably don't have the necessary knowledge to undertake this work...

[/url] I've not seen any sleeving available for purchase that's quite as dense as that - those that I've used before have never been fully opaque. Still, it's got to be worth a go if you need a lot of cable and hence there will be a significant saving if it works. Is there any other...