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  1. S

    My new Megger MFT 1730

    BS7671 never comes into law in England.
  2. S

    advice on 3.6 kw kiln

    Isn't the problem due to the electronic control causing the current to be pulsating DC, rather than AC? That would need a Type B RCD. http://www.doepke.co.uk/catalogue/Cat-pdf/rcds.pdf
  3. S

    Hob and Oven wiring help?

    Well, single socket-outlets have to withstand 14A for between 4 and 8 hours in the temperature-rise test, and in the breaking capacity test a current of 13 x 1.25 A, 10 times. The switch is only tested at 13 A ±0,4 A, but for 15 000 operations. There doesn't seem to be anything else. Plugs are...
  4. S

    LED light and zone advice for bathroom ceiling light

    And it's 220V, whereas the UK nominal supply voltage is 230V, usually nearer to 240V.
  5. S

    Protecting runs between buildings from short

    This reminded me of working at an American air base in Suffolk in the 80s, where they had a sort of cross-over arrangement for the entry lane - entered on the left, then crossed over to the right-hand side of the road while within the base!
  6. S

    How many LED batten lights? in double garage, newly built?

    I've got 4 of these: https://www.tlc-direct.co.uk/Products/TNPP158HF.html in a similar size garage, and their adequate for working on the car. I wasn't convinced that the extra cost of LEDs is justified. Paint the walls and floor in light colours, and if you have a ceiling paint that white -...
  7. S

    PIV electrics

    What do you consider to be adequate or optimal?
  8. S

    PIV electrics

    Well, neither you nor BAS has given an example of an instance where it would be harmful to fit a lower value plug fuse...
  9. S

    PIV electrics

    A further consideration is what is meant by 'adequate' internal protection. Is protection sufficient for 100% of cases, or 99%, or 90%? What if the appliance is such that any overcurrent sufficient to blow a fuse will have caused irreparable damage to the appliance?
  10. S

    PIV electrics

    I doubt it, for a number of reasons, one of which is that you'd have nowhere to fit it! At that price, it presumably contains only a heater so would be unlikely to benefit from a lower value fuse than is necessary to protect the flex. I find that very surprising.
  11. S

    PIV electrics

    I don't think anyone is suggesting that the flexible cord of an appliance is not fully protected by the preferred value BS1362 fuses, so I don't see the relevance of that quote from the BEAMA paper.
  12. S

    PIV electrics

    BS1362 includes 1A fuses.
  13. S

    PIV electrics

    Because currents that can blow a fuse below 1A don't need sand-filled ceramic fuses to achieve the rupturing capacity?
  14. S

    PIV electrics

    I'm pretty certain that the BS doesn't include 50 mA fuses.
  15. S

    PIV electrics

    Yes, including the belief that the only benefit of plug fuses is to protect cables.
  16. S

    PIV electrics

    No it isn't what I'm saying! If it had a BS1363 plug, what fuse would you fit?
  17. S

    PIV electrics

    Is it not rational that smaller value fuses allow less let-through energy than larger fuses? Do you need evidence of that fact?
  18. S

    PIV electrics

    Other than that which can be deduced by anyone with a basic knowledge of elementary physics, no. I am not arguing anything about the purpose of fuses. I am arguing that it is a fallacy to state that fuses only protect the cables and not the appliances connected via those cables, and that the...
  19. S

    PIV electrics

    I made a statement.
  20. S

    Polyurethane foam and cable

    You might get better results from the Building Research Establishment, but I believe they're rather busy with fire testing at the moment.
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