Last seen: Apr 24, 2025
As I understand it, if a slowly rising common mode DC is passed through the AC only type of RCDs then it will saturate the core in it, and then it can...
We have two car chargers with different plugs🙄 - a 32A one and a 10A one. The larger one is fed with 6mm2 cable from its own tiny CU (looks j...
I’ve seen our mains voltage very high on occasion, but I’ve never known anything happen due to it. We get 253V on a sunny day here - I looked in the ...
There’s no definitive magic deltaT for a heatpump, just pragmatic ‘generally optimum’. If you put more power into the water pump, the deltaT will redu...
That 2.5% cost increase every degC corresponds to my home-made graph pretty accurately. I was confused by the graph above at first, but then I unders...
Technically I could perhaps be called a heat pump designer, having designed and built the one gshp system that has heated our home for 3 years. It’s ...
Why do panels get damaged if not connected? When they are normally in the sun, they get 800W/m^2 evenly distributed, and they warm up everywhere. S...
In the solar panels. On a nice sunny day, a square metre of panels would get 1kW from the sun. Of this we might expect 200W of electical power if...
We had our gas meter removed too by Octopus, for free. It took the guy 20 minutes to do - he turned off the incoming gas lever in our cabinet, remove...
I notice on a pic on page 2 what looks like heatpump gubbins (buffer, tank, pump, pipes) in a cold ventilated loft? How much insulation is there in ...
As the boiler is just on/off at a given running temp, can you drop the temp down to the lowest acceptable, leaving it on most of the day (18hours+)? ...
Do your gas boiler have weather compensation? If so, enabling it will improve efficiency. I assume the boiler is huge, and can operate at high power...
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Latest Posts
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RE: Agile: average import cost vs other tariffs?
@old_scientist We are with SSEN and our G99 application...
By Toodles , 2 hours ago
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RE: Yes, the "zoning with ASHP" topic again...
@ccap On the subject of TRV’s, when I had the gas boile...
By Toodles , 4 hours ago
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RE: Battery sizing - How low can you go!
@chandykris We seem to have similarly sized systems and...
By bontwoody , 5 hours ago
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RE: Renewables & Heat Pumps in the News
@transparent Red Eléctrica will require data with gr...
By Lucia , 6 hours ago
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Doubling of annual allowance for distribution network s...
By Jeff , 7 hours ago
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RE: Solar Power Output – Let’s Compare Generation Figures
Yes. Storing the solar generation within the home is gr...
By Transparent , 8 hours ago
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RE: ASHP Ecodan L9 error - No Heating but Hot Water
@phoenix15, @heacol cover your area… I’d strongly recom...
By Mars , 11 hours ago
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RE: Warm weather and heat pumps.
@editor Oh nothing right now because $ needed for struc...
By Lucia , 22 hours ago
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Maybe you could do a video on it please? Ask all the ma...
By Lucia , 22 hours ago
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@iantelescope - I do appreciate I am becoming something...
By cathodeRay , 1 day ago
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RE: Potentially more choice including air to air heat pump grants
@jeff Such documents are far too wordy for my ‘daily re...
By Toodles , 1 day ago
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RE: Getting the best out of a heat pump - is Homely a possible answer?
@grahaml I cannot agree that it is a small percentage o...
By benson , 2 days ago
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RE: Commencing on an ASHP Installation Process
In that case treating it as a separate space seems emin...
By JamesPa , 2 days ago
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RE: Samsung Gen6 16kW tribulations
@emceed, can you please give us an update on your syste...
By Mars , 3 days ago
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What's the problem you are trying to solve. The answer...
By JamesPa , 5 days ago
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Good luck. For what it is worth my system was very def...
By JamesPa , 5 days ago
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RE: Massive Electricity Cost for Running My Air Source Heat Pump
I agree @mark-h The Building Regs are now very readable...
By Transparent , 6 days ago
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RE: Help me understand my Mitsubishi Ecodan system
@carpenterstation When changing settings in the ser...
By RobS , 6 days ago
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RE: Ecodan Legionella cycle - immersion heater problem
Thanks for letting us know @clockworks I admire your ...
By Transparent , 7 days ago