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Additional CUs are not specifically called out as notifiable, but "new circuits" are. Maybe there is some corner case where you could add an addtional CU without creating any "new circuits" but.............

However, FTTC is likely to live rather longer. If you live in an area where openreach have built out their FTTP service then it's probablly irelevent, but if not then copper wiring could still be relavent.

My experiance with velleman is that the contents of the kit are good quality, but they often teach very little because the documentation often does nothing to explain how the circuit in the kit works. The maplin (RIP) own-brand kits were the opposite, good documentation on how the kit worked...

Many electronics that don't do any "communication" get a FCC ID, though I'm not sure what the precise criteria are. As I said, the FCC is a US agency, if the product is not intended for sale in the US, there would be no need to involve the FCC.

They make a Quinetic switch in "Click minigrid" format, which allows 3 modules in a single backbox (though this does admittedly limit your color/style options).

Lots of products will have FCC IDs because they are also sold on the US market but the FCC has no regulatory significance on this side of the pond. Conformance with european directives is supposed to be indicated by the CE mark, but unfortunately that doesn't come with any form of ID, nor does...

I've seen some moulded cables by volex that appear to have unusually small 13A plugs (and also have unusually small connectors on the other end). https://uk.farnell.com/c/cable-wire-cable-assemblies/cable-assemblies/power-cords-electrical-power-cables?brand=volex&product-range=152610-series...

Even if we didn't care about the BS7671 requirement to run a CPC, there is the slight problem that 3 core mains-rated cable/flex without an earth core seems to be very difficult, if-not impossible to obtain.

When I look at the fusebox I see Three 5A fuses. Presumablly lighting (though it's somewhat strange to have 3 lighting circuits in a property that has so few other circuits). One 15A circuit, might be sockets, but I think is more likely an immersion heater. Two 30A circuits one of which is...

I'm not aware of any regulation that would prevent you from simply putting the doors back on your cupboard and I don't think it's at all an unreasonable thing to do. Afaict the reg om BS7671 requiring "consumer units and similar switchgear" in "domestic premesis" to be "non-combustible" was a...

I see basically three possibilities. 1. Faulty socket. 2. Swapped conductors at the source, leading to an earth fault when the socket is screwed to the back box. 3. Damaged conductors shorting against each other or the back box. Possible steps from here. 1. Test the socket for faults (or swap...

In the UK it's up to the supplier to determine if a supply is suitable for TN-C-S. If it is then they will supply an earth terminal which is bonded to their neutral wire. In normal installations neutral and earth are kept entirely seperate on the customer side. I stand by my position that...

DO NOT connect the ground to the neutral without consulting local regulations first. Americans bond ground and neutral in the main breaker panel, but this is a quirk of american practices, not a universal global standard.

Changing a CU without doing at least some inspection/testing first, can put the electrician and their customer in an awkward situation, For a few reasons. 1. By installing a new CU the electrician inevitably assumes some level of responsibility for the wiring supplied by it. Some pre-existing...

Is the cap of that lampholder make of metal? or is it plastic that looks like metal? If the former than that construction looks like an accident waiting to happen with half-assed wire terminations only millimeters from a metal part!

Does anyone know what those white boxes that look kind like meters but without any cables coming out the bottom are?

Is there any information on how exactly they came to be electrocuted? did they drive screws through cables? was the insulation touched by loose wires?

I've only tried the minigrid and architrave versions of the quinetic switches. They seem to make about as much noise as other plateswitches (much less than a pull cord).

AIUI generally the signalling voltage is within the "ELV" voltage band, but it's referenced to the neutral conductor. So in the event of a lost-neutral or an upstream polarity reversal it could become live at mains voltage.

black. The only mains cable/flex I've seen with a white conductor was/is american (american 4-core flex seems to be red/black/white/green).