Last seen: Jan 12, 2026
For your PME (TN-S) 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...
Latest Posts
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RE: Speedcomfort radiator fans
Good idea, @deltona. I'll have a look around.
By Majordennisbloodnok , 4 minutes ago
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RE: GSHP WOES! Midland based engineer recommendations?
@johnbroome, I've just connected you with a highly reco...
By Mars , 9 minutes ago
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RE: Considering MLCP (Multi-Layer Composite Pipe) for ASHP
I agree, I wouldn't and I didn't. That doesn't however...
By JamesPa , 13 minutes ago
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RE: Recommended home battery inverters + regulatory matters - help requested
On closer observation, I had missed that the latest EIC...
By Batpred , 13 minutes ago
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RE: Post-Traumatic Heat Pump Stress Disorder
@jamespa, we have got this topic, which all the mods ca...
By Mars , 2 hours ago
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RE: Sunsynk Whole House Backup Issue
Hi @lostandconfused - you're in luck.And you're quite r...
By Transparent , 2 hours ago
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Things have gone quiet with you @drei. Any updates?
By Mars , 2 hours ago
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RE: Passiv Smart Thermostat - Help & Forum Support
Thanks @tim441. Interesting timing, as Passiv are a cur...
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Hi everyone, I have a two year old Marlec Solar iBoos...
By Tallmarc , 7 hours ago
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RE: Please help with the settings ecodan
Are you trying to address any particular performance is...
By Sheriff Fatman , 12 hours ago
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RE: Solis inverters S6-EH1P: pros and cons and battery options
🤣 Well, I never managed to get the HA solis "...
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RE: Experience - New Build / Complete New Heating System
Your sap clculations should give you a heat loss figure...
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RE: Vaillant aroTherm not heating with many faults
@editor hmmm, our engineers Rae, Craig, Naz, Rob and Ry...
By ASHP-BOBBA , 15 hours ago
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RE: I’m glad the cold spell is over!
@editor as a reply for this date the 6th of Jan in o...
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RE: Heat loss based on gas usage
@jamespa Thanks. The numbers posted above were jus...
By Bash , 17 hours ago
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RE: Heat pump not reaching flow temperature
I would describe this as either a fault or a configurat...
By JamesPa , 17 hours ago
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RE: New Daikin 11kW Altherma 3M install - is it working as it should?
I forgot to mention: Octopus measured our heat loss at ...
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RE: Air source heat pump roll call – what heat pump brand and model do you have?
Forum Handle: @davec Manufacturer: Peak Energy Mode...
By DaveC , 21 hours ago
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RE: Octopus Cosy 12 Heat Pump Regret: Incredibly Loud, Poor Heating & Constant Hum - Help!
Well, the guy came out, turned the heat pump to max, we...
By razz , 21 hours ago
