MikeSharp01

Surely the tundish can just vent into an internal drain or is an outside vent obligatory?

The problem with using the heatpump (HP) to heat the water via PV is that a HP needs to run for long periods. So you may get long periods of sun but you may get a cloudy day and the PV generation is going up and down so causing intermittent availability for the HP which you don't want to be turning on and off all the time so you will end up importing.

I am hopeful!

It is time to fit the solar system and the interplay between choices one could make is interesting to say the least. We have one fixed point - the solar array 16x430 panels from Eurener. The rest is now to be decided and that leads me to four main questions perhaps 3 if you combine the 2nd and 4th with a few more supplementary ones on the side. Here is a picture: A. What size inverter I assumed bigger than 6kW but I am being told that 6kW will be OK. B. Must I choose batteries now - economics really yes we can afford them but the value does not quite seem to have topped out yet? This is somewhat mixed up with D below as well. C. Our DNO says they will allow up to 5kW after limiting so given we have, in theory, 6.9kW we will need a limiting inverter but as yet I have not found a hybrid that says it does limiting out of the box. D. Once you get a hybrid inverter what technologies are available for charging batteries is it all proprietary - IE limiting choice of batteries to those from the inverter supplier or generic, which I suspect it can't be wholly be but maybe it can.

Yes but the losses may or may not be significant depending on the nature of the setup, personal views on the value / scale of the lost percentage. Solaredge have a couple of briefing papers on it and the use of module level MPP (Maximum Power Point) trackers to wring the last few percent from an array with some shading likely. https://knowledge-center.solaredge.com/sites/kc/files/se_technical_bypass_diode_effect_in_shading.pdf and the theory of module level MPP trackers https://knowledge-center.solaredge.com/sites/kc/files/moving_forward_to_module_level_power_optimization.pdf

Yes they have two types I think, both really press connectors just like JG, and others, stuff.

Is it flats or offices - either way won't it need car parking spaces?

No I would not expect to - I would hope the tiles are all flat so as long as we start flat there should be no lipping anywhere.

Is this a common idea, we have 100m2 of large format tiles to lay and am somewhat terrified of lipping but thought the self leveling kits would sort it.

So it's a shoulder month job is it?

Ah now I get it - sorry.

What!!!!@@@ the EPC is related to income! Surely it's just based on what you have not what you can afford? (Although I appreciate that what we all have is related to what we can / could afford.)

Didn't know that, might have a play - I want to test the water for going over the 16A limit as I would rather not need to buy a limiting inverter or go for 3 phase, even though the pole with it on is in our land and right next to the meter cupboard, and our projected usage pattern will mean that we would be better off if we can export more. Reading around it looks like it is usually NO but can sometimes be YES.

Interesting - gives me another opportunity to trot out the 'everything is connected to everything else' bumper sticker. So essentially as more of us get PV the utilities costs go up because they pass less energy across their network on which to make a profit. So costs standing charge goes up for everybody and those left have to pay more for their electricity - even though some of it might be coming from just next door!

OK so here is a neat little pad in the SE, with price tag to match, that has very nice credentials on the SAP front but can rival Drax when it comes to burning wood 🪵 and they have 2 ASHPs, loads of Solar PV and 2 Solar Edge batteries- but can anyone afford it? https://www.rightmove.co.uk/properties/144719090#/?channel=RES_NEW

Yep - everything is connected to everything else!

Fascinating stuff. 0.18 seems quite high to me but I guess the bales might be more than 410mm deep.

If you are comfortable power down the diverter and then open the immersion and remove the live wire, wrap the open end in tape and close the immersion cover - wait to see of the problem goes away.

They can be a bit slow at times.

Yes the technical guy I have been speaking to took me through all the details and advised me on flow rates, silencing, back pressure calculations etc. Really helpful.

Any long term issues with the Titons, we are just about to order the new 4B eco plus?

Plus one for Envirograf - they will help you if they can they will ask you for such things as the surface material - in your case OSB, the fire rating needed and the area to be covered, they then work out the amount of paint and sell you that amount - they won't sell you less and will specify the number of coats of paint. Then once you have done the job they will send you a certificate you can shown to building control. It feels like a faff but its certified work you can actually do yourself. We have used it on all the structural metal work in our build - very limited amount to be fair. They will even give you stickers you can put on the finished surface warning people not to strip it!

If it were insulated on the top as well then it would be a Thermal store of sorts then maybe it would be useful but as they are, By design, open on top to heat the house they are all but useless. Although you do have a load of mass at 20deg to play with if that helps.

We are all sorry for your loss Joe

Can you actually get inverted hangers like that? You will need to pack the Web out to the hanger so you can get the full support to the sides of the hanger. Is there any insulation on the outside of the vertical beam the rafter cones down to. If not you could insulated along the outside edge with some pu and get a better overall performance for the overall detail so you don't need to worry about metal hangers.