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Last seen: Oct 19, 2026
For a TN-C-S (PME) supply the earth to each property is provided via the neutral wire.Your house earth connects to the Neutral at the Service Fuse. ...
I haven't previously met the concept of the local grid being fully self-diagnostic. The DNO Engineers have a device they can attach to the wires whi...
Here's the Power Cut map from Cornwall at 23:00 last night The best strategy for adding a (diesel) generator is to connect it to a dedica...
@jamespa - your diagram with my additions You must have a (rotary) isolator in the supply to the inverter The CU on the right has a...
Indeed. Present ToU tariffs are based on national supply and demand statistics. But most of the new renewable sources of generation are connected ...
Earthing is definitely a subject which is best approached by a local electrician who already understands the ground conditions in the area. I have t...
Certainly worthwhile considering Geya.They're a reputable Chinese manufacturer. But not the left-hand of the two breakers because it's sing...
Those Manual Changeover switches are inter-locked.For each pair of blue levers, only one can be up (ON) at a time. I'll return to your diag...
I do have some Manual Change switches within my off-grid system. You can see that the left-hand one allows heating and lighting to be switched bac...
There are several reputable suppliers of obsolete & ex-stock circuit breakers in UK. Obsolete ElectricalWilrose Electrical and on ebay:Circuit...
The latter is the case. But an electrician won't allow grid-connected and off-grid circuits to share the same CU.That would create a risk of an inco...
No. The Solis and Sunsynk inverters which we're discussing have two separate ports, both of which can supply household loads from your incoming sola...
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Latest Posts
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RE: Renewables & Heat Pumps in the News
The irony is there's already an established internation...
By Temperature_Gradient , 2 hours ago
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15kw pump for 225m2 1990's house - over kill?
Good evening. I am looking at switching from an oil-bas...
By seaviews , 11 hours ago
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First you need to know how much thermal energy you'll n...
By bobflux , 12 hours ago
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RE: How quickly would you want/expect heat recovery to take from setback?
@toodles Ah, that makes sense. Your using the TRV bo...
By Singlespeed , 12 hours ago
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RE: Renewable Heating Hub Homeowners' Q&A Podcast
Come for the low-carbon homes. Stay for George Clarke’s...
By Mars , 2 days ago
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RE: Octopus Cosy 12 Heat Pump Regret: Incredibly Loud, Poor Heating & Constant Hum - Help!
@razz, as we head into the heating season, I just wante...
By Mars , 2 days ago
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RE: How should the Boiler Upgrade Scheme be reformed?
Not quite, regular A2W heat-pumps need a load of extra ...
By Temperature_Gradient , 3 days ago
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RE: Heat Geek installations: share your experiences
one thing i learnt from reading people’s comments and e...
By Batpred , 4 days ago
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RE: Cooling/heating with one unit
"The way we use A2A on a cheap overnight EV tariff is t...
By mrkfm , 4 days ago
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RE: Do I add Air Con or MVHR to existing A2W ASHP?
We have ‘signed on the dotted line’ today for a Panason...
By Toodles , 4 days ago
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RE: Heat pump branding. Clever, contemporary… or a bit too much?
...or it was there and was lost thanks to laziness and ...
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Bufferless design & control of Chinese air to water monoblock hybrid heat pump in Alberta, Canada
This post is about how I successfully configured a buff...
By Tony.Stolz , 4 days ago
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The installer visited yesterday and suggested the noise...
By JamesChatz , 4 days ago
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RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
Your house sounds a lot like mine. 2 surveyors each sp...
By JamesPa , 4 days ago
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