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Last seen: May 14, 2026
An earth fault on a TT derived supply (typically but not exclusively overhead lines) will often not trip an MCB/Fuse (or at least not disconnect the f...
@jamespa What I would think of as abnormal would be the heat pump cycling on every small blip in another otherwise fairly consistent OAT, as oppose...
I'd like to highlight two points. 1. Regarding SPDs Most electricians are going to be guided by manufactures instructions and the IET's BS7671. ...
No, I was trying to explain that an RCBO has the functions of an MCB and RCD combined in to a single device. See @transparent 's various replies fo...
I'll let @transparent reply to the points in the above posts as they appear knowledgeable and doing a good job of sorting out the confusion that has o...
The photos show a 16A, C curve, type A RCBO. A RCBO combines the function of an RCD and MCB. The RCD component of the breaker is Type A, 30mA. T...
We recently (Aug 25) had a Grant Aeorana 3 installed under a Eco grant. Initially set with 48degC fixed flow temp for space heating no schedule jus...
Latest Posts
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RE: A2A vs A2W: Which Heat Pump Would You Pick?
MCS aren't involved in commercial a2a installations whi...
By JamesPa , 2 hours ago
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RE: New Vaillant aroTherm Plus in black - When will it come to the UK?
Interesting. Perhaps wait and see how things develop! ...
By JamesPa , 2 hours ago
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Any readers with an interest in Solar Farm generation i...
By Toodles , 2 hours ago
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RE: Heat Pump Operation in Summer - Valliant 7kW
Yup! Summer in Spring. Wonder if Summer will last unt...
By Majordennisbloodnok , 3 hours ago
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RE: Solar Produced vs Home Consumed
It's worth adding that if you have a hot water tank and...
By JamesPa , 4 hours ago
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RE: Heat Pump Overpromising – What Were You Actually Told Before You Bought?
@editor Sorry Mars, I didn’t see a notification about ...
By Toodles , 5 hours ago
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RE: Hitachi Heat Pump being replaced with Vaillant
Yes to be configured as a volumiser. The pump is to be...
By trebor12345 , 5 hours ago
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RE: Anyone concerned about GivEnergy?
So it seems subscription day has finally arrived for Gi...
By TechnoGeek , 6 hours ago
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RE: How many people are happy with their ASHP and do you believe them?
I agree, and not. Energy prices are a largely politica...
By JamesPa , 9 hours ago
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Yes, you will need to notify them even if the inverter ...
By Old_Scientist , 9 hours ago
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RE: Heat Pump Manufacturers Recommending Buffer Tanks
@tony-stolz, I think @jamespa has already covered the h...
By Mars , 22 hours ago
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@editor "The interesting bit is that many modern invert...
By Singlespeed , 1 day ago
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RE: Ecodan & MelCloud scheduling
With the prospect of warmer weather this week, I brough...
By downfield , 1 day ago
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RE: Help me keep the faith with my air source heat pump installation
My heating developed a really severe case of noise and ...
By JamesPa , 2 days ago
