MikeSharp01

Not odd but interesting. When entertaining you want to talk to your guests so I am not sure why you would not have both sink and hob on the island, suitably separated of course. I find the most interesting thing when looking at other peoples kitchens is where the oven is in relation to the hob, if not directly under it. After all they have no direct relationship unless you are finishing off something under the grill that was previously on the hob and of course most peoples hobs are the landing places of trays etc from the hot oven. Wonder if there are any stats other than those associated with the well known triangle to show the average time spent at each of the stations of the kitchen when prepping an average meal.

Net present value / Real rate of return needs also to factor in inflation as this eats away at investment now over time against interest lost or otherwise paid.

Welcome to THE forum for self builders and like minded individuals - sounds very exciting and we look forward to hearing more about it.

Makes me wonder what to do next - I am about to order the 7+ Kw of solar panels and I know that is too much to export all at once but given that it is spread over the roof segments. 3.66Kw 20deg west of South @ 30deg elevation - no shade, 2Kw 20deg south of East @ 30 deg - shade early AM and 2Kw 20deg north of West @ 30 deg no shade I think our max output will be slightly above 5 although I have room for about 5 Kw more on the East & West roofs combined. I had intended to control loads and charge things like the Sunamp using solid state contractors, rough, ready and somewhat wasteful, so as to keep the peek below 3.66Kw, so I used it all and export a bit but I am now thinking I could export if I went for a G59 application - used an inverter system with the relevant protection - so no relays, the other phases are on a pole on our land! Even at 5.5p I cannot see it being a good financial call but imagine what it will do for the SAP rating! Need to do the math!

Interesting....

Time to order the first floor floorboards. 18mm is structurally enough on 400mm centres of our I-joists but I was wondering what the advantage of 22mm might be if it isnt structural.

Welcome to THE forum for self builders and like minded types - looks great.

I refer my learned friend to my previous answer....

You don't have to be cynical to get that this is exactly what will happen because the profit motive will drive it - something like this... "Which charge option would Sir / Madam like, we have the always full model where you pay a small monthly premium on your standing charge and a charge anytime rate, for your connection so that we allow you to charge your car anytime and we never use it for load balancing OR you can have the hope it will be all right where we can stop your car charging if the grid is overloaded you pay slightly less for the electricity you do get but we cannot be sure you will get it all the time" as we, he says under his breath, can charge people on rate the always full tariff more for it." The alternative, where the power of the consumer really comes into play, so when he grid is suffering the DNO gets into a bargaining position with you about how much they will pay you to flatten your battery - imagine the trading algorithms, won't be allowed so you can forget that. Better off building yourself a power station and doing your own thing - suddenly off grid becomes more attractive if you can generate it and store it.

Or find way to burn / denature it - the promise of fusion - MAYBE.

Not sure I would trust a smart meter as far as I could throw it - but the low points must, commercially, be in the E7 periods so at night when the sun does not shine so we loose PV as a possible then and - once everybody is using the E7 period do you think our commercial thinking managers will allow us to to keep it - suddenly it won't be a low point anymore!

Save me Googling it and doing the maths - you will probably have it in your head, by how much, multiples of current production, will we need to increase generation capacity by to move all our people transport needs to BEVs then?

Yep - I know & CAT 8, but I have a 500m drum of CAT6 so that is what I will use.

I am almost sure we will use CAT6 to all our switches and power anything there with PoE if you used a deep back box you could get enough processing power behind an ordinary switch to do most anything! I am experimenting with mesh networks, based on THESE, and THESE self powered switches to see what I might make them do around the house.

As I think I mentioned earlier on another thread this is all about data and we give it away as if were our exhaled breath IE of no apparent value it has real value and the fight is on to get as much of it as possible. I am not as worried about Alexa type devices as I am about the NHS, well HMG actually, selling the UK health data set, however much anonamised to the tec giants because they will then joint the dots at the top and know an individuals health condition. If think that sounds unlikely then just imagine if google were tracking your use of searches and trying to spot you looking up some health condition then tie this up with a diary entry about a visit to the GP then your orders to an online pharmacy even if they cannot see tge prescription they will know what is wrong and bingo.... Remember that in this big data Klondike there are no models.

Not sure this is ever a thing these days. We do have a skills gap but it is not in wiring plugs. It is in finding finance and inginuity to set up and run tech businesses up and down the land or getting sponsorship to be an e-sports contestant! Let others make the leads while we stand on the shoulders of giants and use them to power the internet of things and clever ideas leveraging our data currently being massively exploited by others ,that the people who make the leads will want to buy. EG intelligent grids, great games, clever prime movers etc. I think, like most here that this would be all wrong but having bashed away at the industrial age for years I am now of the opinion that it is our future is not there, probably beyond the information age and well into the data age.

....and on out into the pine forests, across the glen, glancing off the mountains and onward to the Lochs and thence the sea - bucolic or what...

Get a good inverter controlled unit and you can control the output quite finely and, if you get reversible one and add some control valves / pumps etc, you can cool the slab in the summer.

That makes sense, but as @PeterStarck says the 100l might be a bit high, so I think that means you get: Worst case day ASHPKw = (174 * 30) + (n * 2) Average case day ASHPKw = (174 * 10) + ( n * 2) Where n = number of people at home Substituting n = 2 Worst Case is: 9.2Kw (Where temp delta is 30) Average Case: 5.7Kw (Where temp delta is 10 as is roughly the average case for the UK across the year, so might differ in your actual location - Cornwall for you!) You can assume that there will be very few days in a decade when in most parts of the UK where the temp difference will be 30 degrees, and even fewer for your location, so you already have a good safety factor. This all means that for 2 people a 10Kw ASHP should be enough for even the worst case and on a normal day it will be working at about 62% of its max capacity. If you want to get to 50% you need to somewhat heed @SteamyTea's thinking about where you are as critical.

Don't forget to add a bit if you have a young family or anybody else who takes loads of showers / baths as DHW will be a key factor over and and above heating the building.

Welcome to THE forum for self builders and like minded individuals.

Welcome to THE forum for self builders and like minded individuals ask away and there will be advice a plenty.

That is a relatively low SAP rating for a new build and will demand quite a big ASHP. What dies it need to do, UFH / Rads... DHW.

Eeeeeek scream, funny feeling in the gonads........?

Welcome to THE forum for self builders. Self building is not for everyone but it is a very broad spectrum from cheque book self builders who pay others to do all the work to the person doing most / all the work themselves and everything in between. Where you are is about finance and inclination.