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  1. J

    AFDD in 18th 2nd Amendment

    Definition of shall: "Shall" is a modal verb used to indicate future action. It is most commonly used in sentences with "I" or "we," and is often found in suggestions, such as "Shall we go?" "Shall" is also frequently used in promises or voluntary actions. There is a difference between shall...
  2. J

    AFDD in 18th 2nd Amendment

    I have not looked at page 18 yet. But in normal English shall is not must. Need to get this clear.
  3. J

    AFDD in 18th 2nd Amendment

    I am with you. But it seems AFDDs will be on all circuits in the near future, going the way of RCDs. Which is back to 1940/50s wiring. AFDDs, don't detect a fault on line to line on rings because it's at the same potential. AFDDs only protect against screw-in faults, line to neutral or faults...
  4. J

    AFDD in 18th 2nd Amendment

    You never got my point. RCDs were not required, but were fitted wholescale way before being mandatory, because they were recommended.
  5. J

    AFDD in 18th 2nd Amendment

    There is clear a suggestion AFDDs be fitted (not required but fitted) in the average dwelling. In 421.1.7 it is clear saying "For all other premises", it recommends AFDDs in final circuits of 32A or less. We will follow the USA it seems.
  6. J

    AFDD in 18th 2nd Amendment

    You have a point. CUs may be prised off walls, as boilers were swiped in new builds before handover. 421.1.7 "AC final circuits supplying socket-outlets with a rated current not exceeding 32 A". As they say recommend, AFDDs will be the defacto norm, as RCD became. It was not mandatory to fit...
  7. J

    AFDD in 18th 2nd Amendment

    So a dedicated radial to say a washing machine with one socket needs an AFDD. £130 each. Gulp! I can see these AFDDs promoting large rings with some 4mm cable to the 1st socket on each leg of the ring to prevent overheating cable on an unbalanced ring - to save costs. As much as possible will...
  8. J

    AFDD in 18th 2nd Amendment

    CUs are not required to be any sort of fire containment Then not mandatory, as some have hinted at.
  9. J

    AFDD in 18th 2nd Amendment

    Will look at page 18. A fire inside the CU has more chance of spreading out of a steel CU with plastic glands.
  10. J

    AFDD in 18th 2nd Amendment

    Blocks of flat over 6 floors, inc' ground, come into the focus of AFDDs. But the regs do not state must have AFDDs, saying shall. Shall does not mean you have to fit AFDDs. So, in a new installation, or new socket circuits up to 32A, it is not mandatory to install AFDDs. If it was the word must...
  11. J

    AFDD in 18th 2nd Amendment

    18th 2nd amendment comes in, in Sept. AFDDs are in it. To be fitted on socket circuits of 32A and above. To be fitted in residential blocks of 6 floors and above, care homes and the likes. Are these mandatory for everyone? If say you have a 17th edition CU, do you have to update to AFDD...
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    1649710309815.png

    • John-SJW
    • Media item
    • Comments: 0
    • Category: Professional Electrician
  13. J

    0.5mm T&E cable now available.

    I am not the one being objectionable. As I have written, my experinces appear to be 100% the opposite to many here.
  14. J

    0.5mm T&E cable now available.

    It was rule of thumb you were using.
  15. J

    0.5mm T&E cable now available.

    You need to understand opinion and factual observations.
  16. J

    0.5mm T&E cable now available.

    The only times I saw it were hidden over kitchen cuboards for downlighters, hidden lights, etc, white as well. But most I saw was flex in those situations. Never saw 1.00mm grey T&E in a 1st fix. Never. I do now.
  17. J

    0.5mm T&E cable now available.

    I knew it was there, saw it occassionally. It was rarely used until LEDs.
  18. J

    0.5mm T&E cable now available.

    I have seen lots of houses in my time believe me. 1.00mm T&E was not readily available over the counter. It was not a commonly sold item, so not on show. We have to agree to disagree. It is circular. You have seen 1.00mm T&E all over in the place in the past 30 years, while I never. I saw...
  19. J

    0.5mm T&E cable now available.

    It does not mean too much at all. But your experiences are 100% opposed to mine.
  20. J

    0.5mm T&E cable now available.

    I am not giving an opinion. A factual observation over decades tells me they went by rule of thumb in that they only used 1.5mm for lighting. In domestic houses few went by anything else except rule of thumb. Rule of thumbers generally oversize cables. Talking about this to a Spark a year or...

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