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Joined: Jan 20, 2022
Last seen: Aug 14, 2026
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Topics: 16 / Replies: 3350
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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...

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

The additional profit being made the installers.

2 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...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Plug and play solar. Thoughts?

I just read that article, @jamespa It seems the bodies are beginning to pile up...

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

OP wrote: So I'd be interested to know where the feed to the new CU is supplied from...... and what size cable it has between the two units.

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

Hager CDB540HP is a Residual Current Circuit Breaker. Here's the English text in the Installation Manual.It measures current which leaks to earth. ...

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

I'm 90% certain that the device you have does not operate as over-current protection. The number of Amps stated on it are the rating of the contacts...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Voice from the future.

There's usually a group of people on the beach at Dover who know what details can be used to populate option-fields in UK Government forms.

2 months ago
Forum
Well & Truly Off The Grid
Reply
RE: Voice from the future.

@toodles - UK Immigration also offers an App which you can use to verify that your passport NFC chip is correct. Try downloading that from the iPhon...

2 months ago
Forum
Well & Truly Off The Grid
Reply
RE: Surge Protection Devices

Although we can't see the part number on that photo above, I assume that the Hager RCD in the upper consumer unit is this one.See the short-form techn...

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

Thanks Tim. As before, there's too little data to make any firm conclusions. Your neighbour's log-file (at 15min intervals) might be showing the a...

2 months ago
Forum
Electricity, Tariffs, Monitoring, Electrics & Providers
Reply
RE: Voice from the future.

It's not that other passport users may or may not have had a similar experience, but that the particular App doesn't conform to the specification. P...

2 months ago
Forum
Well & Truly Off The Grid
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