SteamyTea

Get on with it. Do you have external i.e. weather data for the same period, and heating data?

Welcome Where abouts in the country are you?

Been drinking Lidl version of redbull, called Kong, should keep me up for a while. I always open a tin at Swindon, keeps me alert till past Bristol. Would hate to have an accident there and wake up to @Pocster bringing me grapes. Or gropes in his case.

You don't get hayfever then. Or live in a noisy place.

I have been up since 4 AM, so 19 hours, I think I have sat down for 17.5 of them. Only just now having my third mug of tea.

From their website Power Metering Shelly 1PM has an integrated precise power meter. You can mea- sure the overall consumption of all the electric devices you are controlling How does it store the data?

Just got home from my weekly 600 mile drive, so hopefully this will make sense. The number of bathrooms/showers and basins is irrelevant, it is the usage. Think about that and then use the government issue of 150 lt of water a day, half of which is hot. Heating sizing in not just to do with the maximum load you will ever see, it is also to do with how often you can expect to need that maximum load. So down here, my minimum temperature is -2°C, but that is only for a few hours, and generally not the same few hours i.e. non contiguous. Luckily the solution to both the spasmodic bathing and inconsistent heating is the same, supplementary heating. The hot water can have a 6 kW heating element in the cylinder, and maybe an inline heater or two. A wet heating system can also have a secondary supplementary heater i.e. not one that is built into the heat pump. There is nothing, once the design is sorted, to stop both the heat pump and the supplementary heaters running at the same time, or sequentially i.e. ASHP to raise the temperature by 30°C then an electric heater to raise it another 15°C in the case of DHW. May work out more expensive than the ASHP filling the cylinder to 45°C in the spring, summer and autumn, and most of the winter, but for those few hours when it is silly cold, and it is generally hours (144 of them in a week) not days, it is overall cheaper. It also give you a back up system if something goes wrong with the ASHP. Just has to be designed now and not as an after thought. Hope that makes sense, my eyes are tired and my ears are ringing.

Got me confused. Maybe it is not as great as they claim. They do a weather proof paint as well. https://www.nudura.com/products/tremco-nudura-products/

Imagine that someone reconfigured the maximum voltage that the inverter is limited to. This was a popular 'trick' if there was a fair bit of local PV on the line. Easy enough to do on some inverters. An islanding systems could probably be wired up incorrectly so that it keeps the DNOs line live, even on approved kit. Now a good electrician should know how to wire something up, buy a bad one might not and an enthusiastic amateur may not even know about any of the rules. Pretty sure we had to put someone straight on here about it recently. The trouble is that many people will see 'MCS not needed' as anything can be connected. I will connect a petrol generator if the price is right.

If you know the power the boiler pulls when on, then a basic electric meter will show the accumulated power used. https://www.ebay.co.uk/itm/354118466147 A useful thing to have anyway and it is only a tenner, and it can display the power for setting up. Or do what I did. All the code is there.

Oh. Don't think I mentioned zanussi when you were first discussing this. We left my Mother's Bosch built in ovens and microwaves when we sold the house. I am still happy with my Russel Hobbs induction hob and my Panasonic combination oven (which has got quieter over the years).

That is a shame as I made a simple device with a raspberry pi to log when a circuit is on.

That is the key point. Maybe MCS needs to offer this a service, after assessing their own installation practices thoroughly.

Maybe. The point is, and I am not supporting MCS in any way, that we really don't want any Tom, Dick or Harry connecting up whatever they want want, whenever they want, with any equipment they want. We have a few people that come on here that think they can connect a larger than the generic 4 kWp system without informing the DNO, because they are going to use all their power themselves (or variations on that theme). There has to be some quality control. If we think that MCS installers attract cowboys, just wait till they are not needed.

Does a course to get qualified to do the testing. https://www.gov.uk/guidance/mot-testing-guide

Because it is more than just electrical safety. As part of the installation, the installation company is meant to get a structural survey done and signed of. The a lot of equipment is also from an approved list. Then they have a complaints procedure, not just on the quality of workmanship, but also on electrical production. Now I am not saying that in every MCS installation, every rule is adhered to, and there are never any problems, but there is a system. Using the car analogy, how would we feel if we could self certify our own vehicle safety every year? I may be able to as I studied automotive engineering, but I am not sure my sister could, even though she has been driving for longer.

While I am always uncertain about using vanished because of the unknown moisture breathability. Not that it will really matter on this as left untreated it would probably last 20+ years. The floor varnish I used on my cheap parquet flooring was a polyurethane one. First time I tried a PU vanish. Apart from where it is physically worn away, it has lasted very well. Where I had a leak in the kitchen (just a small one that went undetected for a couple of years), the adhesive holding down the parquet failed, causing the timber to swell, then bulge up. That was the sign that there was a leak.

Welcome. Start by doing some energy monitoring, that can start anytime and is cheap to do. Will tell you a lot about how your house performs in different weather conditions and how your lifestyle fits in with it.

Tis easy on a raspberry pi. Though I think the rift between RPi and Arduino is similar to Windows and Apple. Shame you 'Apple'. Are you trying to get the 1wire device automatically recognised by the Arduino?

Well not child labour, so must be modern slavery.

I did that, then had to go to the clinic.

How about a fishtank heater set very low.

Welcome I don't comment on people's house designs, what one person finds nice, others will hate. Now I have no idea how practical you are, but have you thought of making your own architectural models. General a knife, divider, sticky tape, glue, paint and some foamboard. And plasters.

Met Office Central England Temperatures. Top chart is min temp, bottom max temp. Here is the mean temps (well actually the mean of the daily median temps)