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Last seen: Sep 6, 2026
Yes, you're right about G100.The export device will be certified to both G98 and G100. If the CT is absent then no export is possible. And if it's...
1: The EREC G standards apply to devices which can export to the grid.If it doesn't have export capability then it isn't covered by a G-standard, and ...
Like @agentgeorge I too have a warm-roof construction. It's retrofitted onto a 1930's farmhouse for which I was extending the roof in any case.I hav...
The issue of knowing the SoC is often misunderstood. It's clearly the case that an inverter can't assess the SoC of a storage battery without being ...
The answer will depend on the circumstances and by how much the steady-state demand exceeds 60A DNOs are unlikely to be heavy-handed in their approa...
Thermal gain from Windows is a common issue. But Home Assistant can also run on a Raspberry Pi, which takes less power of course. 😉
Yes. The point at which the DNO would normally require the home-owner to accept a 3ph supply is when the dwelling is operating above 60A in a steady-s...
That's poor science. Transformers (and underground cables) are often under-specified wrt to present-day demand loadings. They can continue to oper...
You're right @bash - every G99 application gets assessed on the substation data available to the DNO. There will be differing results, even for hous...
Hmm... whereas I understand the physics behind grid topology and operation, and I know it's being threatened by political policies 😯 We c...
Erm... how can @jancold post new links? It's you @batpred , who is doing the research into cheaper storage batteries from online sellers. Isn't it...
Aagh! Guidance from the Electrical Networks Association (ENA) is that domestic export should be limited to 16A per phase by default. So it's surpr...
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RE: 7kW EV Charger Options Advice
@rusty Looks like there’s plenty of room in there for a...
By AndrewJ , 8 hours ago
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RE: Where heat loss surveys seem to go against practical reality
@cathoderay I think there is a reasonable argument t...
By Rob of York , 9 hours ago
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Panasonic Free Multi Z and Etherea Internal units.
My prospective installers have suggested the Panasonic ...
By Toodles , 13 hours ago
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Hi @jamespa , @trebor12345 ,Thank you both for the repl...
By rgabor , 13 hours ago
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RE: Next steps on my ASHP journey: Radiators and Pipework
Great. You just need to find a way of cranking up your...
By JamesPa , 15 hours ago
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RE: Heat Pumps Without Grants: Would You Have Installed One & Will You Now?
We had two heat pumps installed without Govt funding. H...
By Rob of York , 15 hours ago
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My Adapt is finally installed and running! Almost a yea...
By tomasmcguinness , 22 hours ago
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RE: Being screwed over by Volkswagen Audi Group
Thanks, @batpred. That integration is the one I have in...
By Majordennisbloodnok , 3 days ago
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RE: How Accurate Is My DIY Heat Loss Calculation?
@batpred I suspect it will be more this year. I had 9 ...
By AndrewJ , 3 days ago
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RE: Surface mount or bury primaries for heat pump installation?
@jamespa It's rusting 🙂
By tomasmcguinness , 3 days ago
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RE: Glass lined Cylinder for private water supply
Thank you, once again, for your replies. Yes...
By ian33a , 4 days ago
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It’s been out a few days and Amazon has already attache...
By Mars , 4 days ago
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RE: Missing flow temperature in Heat Geek proposal
Yes, and this is another point I agree. We did find a f...
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RE: Problems with sizing a replacement for a Viessmann Vitocal 200-S
A very good point. In effect, the DHW pipework is an em...
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