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    What bulbs are what, and how to tell?

    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...
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    Slimline 13A Plug

    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...
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    Reuse existing circuit

    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.
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    changing to electric cooker, is my 1980 wiring okay?

    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...
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    Enclosure for metal consumer unit, meter and 100A fuse

    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...
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    Curcuit tripping after connecting to plug socket

    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...
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    Is this main breaker box and subpanel setup correct?

    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...
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    Is this main breaker box and subpanel setup correct?

    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.
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    ECIR pre new c u or not

    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...
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    Bought a light - Does this look safe?

    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!
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    cabinet for consumer unit

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

    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?
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    Quinetic light switch - sticky pads in bathroom?

    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).
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    Aico alarm wiring instructions

    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.
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    Aico alarm wiring instructions

    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).
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    Aico alarm wiring instructions

    I would not bet on the pictures on amazon being accurate. 4-core flex with a blue conductor certainly exists, I have some in my garage that I *think* came out of a maplin offcuts bag bought sometime in the 1990s or early 2000s. However since grey conductors became a thing in the mid 200s...
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    Aico alarm wiring instructions

    I recall reistard claiming that oversleeving a line-coloured conductor to use as a neutral was not permitted in the republic of ireland. If-so that would presumably mean a special cable type was needed.
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    Blanki g cooker isolation under sink to pass EICR

    No, it's collecting stuff from the internet, using that stuff to generate model weights and using those model weights to come up with confident, plausible-sounding answers. This process is quite capable of generating new bullshit that did not come from any human.
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    Connecting replacement cable, for hob circuit, into old Consumer Unit with shared RCD - 'legal' (within regulations) or not; notifiable or not?

    IIRC there is a regulation in BS7671 about dividing an installation into circuits to "avoid danger and minimise inconviniance". IIRC in older editions of BS7671 this regulation didn't explicitly mention RCDs, in newer editions it does. Given that in my experiance RCD trips are about as common...
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    Are these C2s or C3s

    Conversely, the presence of thermal damage to bonding conductors would be a massive alarm bell.
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