Last seen: Jan 9, 2026
I suspect these are electric mats not wet so totally separate from the rest of the system. This should be obvious by the presence eg of a switch. Th...
That doesnt seem quite the same description as the one here from the IET which says "A TN-S system, shown in fig 1, has the neutral of the source of...
This is an interesting and very useful observation, albeit one limited to a relatively small range of temperatures (which we are experiencing a lot of...
OK thats great, so basically the mixing valve is disabled and the whole system is running at the same, weather compensated, temperature. From this an...
My most recent certificate says my supply is TN-S, earthed via the 'suppliers facility'. From visual inspection the earthing 'via the suppliers facil...
@transparent thanks. Is the change of earth requirement (ie current arrangement not being sufficient) a consequence of islanding or something else? ...
So does that mean the rads are operating at the same fixed temp as the ufh, determined by the temp regulator on the manifold. If so what's the point ...
Thanks for all the help/comments. I completely agree with the above, I just want to be sure that there isn't an 'artificial' blockage at the end req...
I doubt that matters, ToU tariffs are for the benefit of the grid and electricity suppliers not to aid the transition to EVs. They have been around f...
Are those changeover switches, they are labelled as regular on-off switches? Is this arrangement OK? ...
Thats interesting. Are you saying that all of your house circuits are connected to the inverter when it is operating off grid, albeit some of the loa...
Again thanks. Noted and safety issues are fair enough. The disappointment is (a) the extra CU and more particularly (b) the need to d...
Latest Posts
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RE: Setback savings - fact or fiction?
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By Majordennisbloodnok , 7 hours ago
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Well done to Scottish Power for doing a good job. Well ...
By Majordennisbloodnok , 8 hours ago
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RE: Advice for a novice on Mitsubishi Ecodan 6kW
Fair point. The highest frequency of defrosts I'd seen...
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RE: Heatpunk Floor plan issues
It's usually the complete opposite... seldom that Safar...
By Mars , 9 hours ago
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RE: RDSAP10 effect on existing heat pump EPC rating?
@mike-patrick interesting update - thanks.I've been thr...
By Tim441 , 10 hours ago
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RE: Recommended home battery inverters + regulatory matters - help requested
I remember reading in some inverters. They mandate a se...
By Batpred , 10 hours ago
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RE: Fan is clipping ice build up from the front of unit.
@majordennisbloodnok I’ll not go there thanks! Toodles.
By Toodles , 11 hours ago
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RE: Running from backup generaor in powercut?
@majordennisbloodnok Back in the 80’ or 90’ we had a te...
By Toodles , 12 hours ago
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RE: Running my new Nibe ASHP efficiently
I'm new to the forum. Did you get a reply to this last ...
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RE: ASHP Energy Consumption: Aira 12kW heat pump
@grantmethestrength MCS requirements for DHW capacity h...
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RE: New Mitsubishi Ecodan 11.2kW installation - L9 errors and maybe more
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By anotherdaveuk , 15 hours ago
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RE: Help me keep the faith with my air source heat pump installation
@adamk I'm observing my own system at low temperatures ...
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RE: Free Ecoheat Heat Pump Install
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RE: Radiator sizing sanity check
As I mentioned early on the cost of supplying and fitti...
By JamesPa , 2 days ago
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RE: Electricity price predictions
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RE: New Fogstar 15.5kWh upright solution
Let me point out that there are many Chinese suppliers ...
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RE: Weather compensation- why you should use it
@majordennisbloodnok — The Two Ronnies Mastermind sketc...
By cathodeRay , 2 days ago
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Just realised that this image of the cylinder cupboard ...
By Sheriff Fatman , 3 days ago
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RE: Rodents! A word of warning for heat pump owners
Two thoughts: 1: Let's ask @david-s if Primary Pro in...
By Transparent , 3 days ago
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RE: Solis S6-EH1P8K-L-PLUS – Why I Chose It and What I’ve Learned So Far
In the diagram below, I describe my understanding of th...
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