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Joined: Jan 20, 2022
Last seen: Nov 6, 2026
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Topics: 16 / Replies: 3431
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RE: Several AC coupled batteries

Ready-built LiFePO₄ batteries are also readily available with certifications and UK-stocks. However, there are pro's and con's with purchasing sto...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Several AC coupled batteries

@etchedpixels - why would an electrical engineer be using a Sparky for connections to a battery operating at 52v nominal? The route I'm suggesting w...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Several AC coupled batteries

Given your background, are you open to the idea of assembling your own battery on-site? A nominal 13kWh battery would cost about £2,000 for the hard...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Several AC coupled batteries

Please clarify. If you have generation-based FIT, the amount you receive is linked to what the existing inverter outputs to the home.It matters not ...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Solar Energy - No Thanks.

Thanks @toodles for delivering the full text. I'm getting most of the Derril Water story from elsewhere, but I'm missing the crucial source referenc...

5 months ago
Forum
Solar Photovoltaic (PV)
Reply
RE: Surge Protection Devices

No. The shape of the waveform has no bearing on the decision to use an RCD.   BTW. I'm still unsure why you're making "DC Component" into a...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Surge Protection Devices

Erm... I can interpret that question in more than one way, so I'm unsure of the angle you're taking. All Type-B RCDs and RCBOs will correctly trip i...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: GivEnergy inverter tripping due to over-voltage?

Thanks Tim. That SolarEdge data also shows voltages above 253v. But we don't know enough to tell what's happening. Eg Is the voltage falling aga...

5 months ago
Forum
Electricity, Tariffs, Monitoring, Electrics & Providers
Reply
RE: Surge Protection Devices

I don't believe it's in the Vaillant documentation. I can see no functional advantage in a heat-pump being supplied via an RCD. It's purely a prot...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Surge Protection Devices

The additional profit being made the installers.

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Surge Protection Devices

The issue isn't DC leakage. Type-B RCDs and RCBOs will trip correctly despite the waveform having a DC component present. You need the contacts to...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
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