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  1. L

    Does this need to be bonded?

    Am curious as to why the attachment you posted stated 7.67 Kohm, s as the cut off point for what is regarded as extraneous.? I expected to see a figure of 22 Kohm, s?
  2. L

    Does this need to be bonded?

    Yes. Would be interesting to know what the total Fli is with all metal legs tied together Bonding in a home assumes there is little or no hand to foot fault current current flow. This does, nt apply outside. Bonding in the home assumes connected metalwork has a low resistance to earth...
  3. L

    Does this need to be bonded?

    A 10mm metal bond is not required in this case as the resistance of the extraneous parts in question will be much higher than the usual extraneous items we deal with such as water pipes and other metallic services. A 4mm bond will be more than adequate.
  4. L

    Wiring under skirting board

    I often created safe zones by installing a wired socket. Not to sure about a blank plate on its own. In practice would work but strictly speaking does, nt qualify in my view
  5. L

    Wiring under skirting board

    Unless installed in metal conduit
  6. L

    Wiring under skirting board

    Is it not the case that cables in metal conduit is the ONLY acceptable means of installing them when behind a skirting board?
  7. L

    Does this need to be bonded?

    There, s your answer there. Even within the the home bonding not required if a distance greater than 2.5 mts exists between extraneous parts.
  8. L

    3kw appliance moulded plug top

    That does sound like a peculiar stance by Health and Safety though. I mean in the UK the"customer " appears to be free to wire whatever he likes? So why should plugtops be off limits?
  9. L

    3kw appliance moulded plug top

    I, ve never really understood the benefits of them. It prevents us from checking and /or remaking connections. And the number of these plugs I have seen jammed in to low lying sockets with the resulting strain on the lead and socket itself unlikely to be of any benefit to either.
  10. L

    Voltage on high res. extraneous part

    This was really what I, m wondering about. The FLI test was traditionally regarded as potentially dangerous. Hence the requirement to carry out earth continuity tests on all exposed/extraneous parts first. But if as you suggest (correctly I believe) that modern testers are designed to reduce...
  11. L

    Voltage on high res. extraneous part

    During an FLI test recently on a high resistance extraneous part (several thousand ohm) I decided to test what voltage appeared on the metal while the test was been carried out.I used a Metrel M1 3000.I measured approx 40 volt. Its well over 20 years since I conducted a similar test and my...
  12. L

    Cooker cable size 12.9kw cooker

    Correct. Watching an induction hob in operation it's evident that heat management is far superior to the traditional hob. But the major factors in overall current use will be dictated by local circumstances. For instance in the example I gave, they had to use a particular size of metal pot. It...
  13. L

    Cooker cable size 12.9kw cooker

    Had one of my most meaningful lessons in diversity in a wool dying premises a few weeks ago. They used twenty two 5.3 kw electric hobs for "cooking" the wool in its dye. They were in use 8 hours/day. They wanted to install two more. They had 3 x 80 amp supply. A total load of 127 kw. I...
  14. L

    3kw appliance moulded plug top

    Yes. It's not that long ago that 3 kw loads were pretty much standard in kitchens and utilities. And there were never any question marks attached to a 13 amp plugtops ability to handle it.
  15. L

    Cooker cable size 12.9kw cooker

    Regardless of what the manuel says, you need to ask a, few more questions. Is the cooker to be used ina domestic kitchen or a commercial kitchen? or a commercial kitchen?. If it's domestic, I would have no concerns. They might on the rare occasion have everything on (Xmas) but even then the...
  16. L

    Couple of testing questions ?

    Agree. In fact in practice you will never see it. Unless the unexpected happens. But even then I prefer a Wago,ed JB to a socket with three 2.5,s in it. Again its rare to encounter this situation. And in practice all points would be tested anyway. But you can always tell if there has been a...
  17. L

    Couple of testing questions ?

    There are no stipulations regarding how a radial circuit is to be installed. And there is also no need for them. There is nothing to prohibit a future addition from a random point. Just as a fused spur can be taken from a ring circuit at a random point. These types of"non-linear "radials were...
  18. L

    Couple of testing questions ?

    Radial circuits and rcbo, s (dual pole?) my dream CU "Oi lad, s I believe we have a potential convert" 😊
  19. L

    Couple of testing questions ?

    Now that your question has been expertly answered your next challenge will be to locate a ring circuit within a hundred mile radius of your home. You might just find a few in Dublin, but they are rare. In case you are planning to install any be aware they are forbidden in...
  20. L

    Irish PIRs a few queries

    Agree. They could explain that a little better. Easiest way to remember it is that.. 1) Restricted works refers to DOMESTIC only. 2) Controlled works refers to everything else. (com., Industrial) Correct. Easiest way to remember it is.. 1) Restricted work always involves the D.B. 2)...
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