SteamyTea

I agree. Then you get someone, who knows your name, use it in a post.

Yes. Why boreholes need to be registered. If I had got an unregistered borehole when I moved here, I would be quids in now. Really annoying as the high sewage charges are to help keep the beaches clean. Then people let their dogs shit all over them. If you have a dog, don't come to Cornwall, it is really an anti social thing to do.

SMA isn't it. There is a small dial that sets the country code, think it is 9 for UK. Setting it wrong allows the voltage to go higher, do can deliver more power. So the DNO where right to tell you to disconnect it until it is proven to be correct.

Is this a new build that is drying out? If so, the problem may vanish in a few weeks.

What is this?

How large is the area. Takes an hour to tell someone how to do it. After that it is just practice. 100 quid of materials and 5 attempts for practice and you are ready to do it yourself.

OP said he bought a new inverter. If a good make it should be possible to download the relevant documents. If it is an SMA, let's hope the correct country code was used while setting up, pain if it isn't.

You do. It is a safety issue. They need to know where installations are, how large they are, where the safety cutouts are, and that all the equipment is legal. You better get whoever wired it in to get you the certificates pronto.

You were not hoping to fit PV with that roof were you.

Was not my point. Was just checking the the install is legal to protect the installer and the DNO workers. Diverting to DWH is the easy way, but may only use 6 kWh a day, and in the summer it may be possible to generate 4 times that. Worth remembering that energy and power, the kWh and the kW, are different things. To run a heat pump purely off PV will require a minimum constant power, plus a bit for initial pump/fan startup. Batteries can help here. Batteries are still expensive, but at 20p/kWh to import energy, the levelised cost must be getting close to parity now.

You did inform your local DNO about it, didn't you?

I am the shepherd

It is just down to mm/unit area. But when it is reported, it becomes attached to a geopolitical area. Same as wealth, pollution, cost of living etc. There is nothing inherent in the words Cornwall or Cumbria that make the areas have more rainfall, it is more to do with topology. As long as the sides are parallel.

I don't know what it is in mm now, but was something that was highlighted on my Climate Change course. It was really highlighting the difference between geopolitical and geotopology. By rights, either Yorkshire or Devon should get the most rainfall, as they are the largest counties, and Rutland or IoW (depending on tide) should get the least. My thinking is that High Wycombe is the wettest place, can drizzle for days there, days and days.

Gardens don't need watering down here. I think the average rainfall in Cornwall is greater than the average rainfall in Cumbria though the wettest place is in Cumbria). Did you leave the protective wrapper on.

Costs me less to heat the water than pay for the sewage when I pull the plug. Have I ever mentioned how expensive water is in Cornwall, the most expensive in the country.

Not measured it properly, but it feels cramped, and as you know, I am only 6 foot 2 inches tall. May combine it with some rainwater harvesting. I am sure seagulls shit only smells slightly of herring.

Good. May be able to modify my bathroom to get a slightly longer bath in it.

Can you get panels in plain white. I hate pattern in a bathroom.

No. Can't even recommend one down here.

@joe90 has a crayon based system.

Takes them over a lifetime to build a cathedral. Thermal engineering methods, which have been known for 250 years, is probably considered a fad.

Yes. Why I think that people should engineers of the correct discipline, rather than architects and 'builders experience'.

One problem with Canadian/Northern USA techniques is that there climate is very different from the UK (most of the populated area is 10° South of us. Condensation risk is treated differently, as is ventilation/heating. Walter Lewin is worth watching. His last MIT lecture.

Replace it with GRP. If done correctly, will outlast us all. Was looking at some GRP work I did back in the mid 80's. Still working as intended.