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As said, the boiler seems grossly oversized, my three-story house has a 20 kW boiler. Years ago I fitted wireless tank thermostats to my dad's house, but when I tried with this house, I could no longer find any for sale. I see non-vented cylinders as a pain, last thing I want is to have the...

Today can all be done wireless. The likes of Drayton Wiser the TRV on each radiator is programmed, the idea is every room is independent. The whole idea hinges around modern boilers gaining the latent heat from the flue gasses, to do this the return water needs to be cold enough, so the boiler...

I would say it's a battery lamp someone has stuck a plug on. As yes should be returned.

I would not care, I am like that, I would just use it, but you asked.

Thank you for letting us all know. Nearly two years to get it fixed, no wonder some people don't want smart meters. I did in the end get my smart meter fitted, it was in by end of Jan 24, we got an off-peak tariff, but nearly 14 months latter and still not being paid for export, moved from...

Unless things have changed so the dangling bit may be OK, but the part which is bolted to the wall, needs an earth cable even if the fitting is class II. Having a plug does not help, it's bolted to the wall.

I have motorised valves in all rooms, all wireless, they are often called TRV's, but with electronic heads, they are motorised valves. With gas boilers they modulate, i.e. turn up and down, not on and off, so the controls also need to turn up/down, not on/off, so an old fashion hard-wired...

The minimum lamp size is a problem. I had the same problem, and this smart switch cured it for me, but it needs a hub, so unless using other smart devices it can work out expensive. PIR bulb may help? Or just a smart bulb, they have dropped in price so much, last ones I got at £5 each, the...

Thanks, I was about to dump some lamps, now I will remove and keep the fly lead in case any of my new lamps damaged.

From Wiki on this forum lights tend to be daisy-chained ceiling rose to ceiling rose, a tester like this may find which is last ceiling rose to be working, seems likely a junction box in the kitchen, these are often used to replace ceiling roses when down lights are fitted. However, if down...

If we have food which is bad, we can get ill as a result. If we know a freezer has failed, we will dump the food, or at least not re-freeze it, but where an RCD has been reset, we may not realise food has defrosted, and so eat bad food, where food is cooked then likely the cooking will get rid...

I would think there are many more times when the supply has tripped before anyone has had a shock than tripping while someone is getting a shock. However, very hard to prove. Not sure if that is true. However, the shaver socket is designed to run a shaver from, not charge a shaver when not in...

If the hole already exists as 20 mm, I use a cone cutter.

I was rather disappointed with the lithium jump start pack. It said how it could be damaged if cranked for too long etc. And I don't crank an engine with a stop watch in my hand.

No, one RCD would trip the other, can't run RCD's in parallel. Any extension lead would require someone manually to swap over the supply, you can use a battery we call it an UPS, uninterruptible power supply, it can be portable as shown, limit around 2 kWh due to weight, or built in like mine...

There are two types of thermostat/programmer wiring wise, those with volt free contacts, and those where the contacts are connected to the supply to the device. Any electronic thermostat/programmer must get power from somewhere, be it battery or mains, with built-in mains power supply or...

There was a RCD with a built-in warning light to say when near the tripping limit, think it was called the X-pole, but google seems to find non-electrical items when I feed that in to the search engine. Today there is a move from a RCD feeding many MCB's to the use of RCBO's which combines the...

Bosch do seem to copy and paste parts of their instructions, asking for things like Type A RCD protection on the supply. But also if you read carefully often one realises it is a watch my back exercise, where it will say a Type A RCD should be fitted where required, well of course it should be...

I like the idea of being able to simply unplug the central heating boiler in the event of a power cut, and plugging it into some other power supply. I have not done it with my own house, as have built in back-up supply, so can't see the need to change. I agree with @EFLImpudence that easier...

Looking at this, 9 and 10 seem to be from the thermostats. I would think you can trace the 2 black wires and see what else is from the same cable. So, identifying the two thermostat cables. Personally, I would wait until the summer, this is not the time of the year to make a mistake which means...