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  1. spark 68

    Bonding Control panel

    Most of the data centre distribution panels had double size Neutral bars compared to the phase bars to account for triplen third harmonics (a lot of big switch-mode supplies apparently) and these always had a totally separate and insulated clean Earth bar as well as the usual 'protective' Earth...
  2. spark 68

    Bonding Control panel

    I have done some panels for hospital/operating theatres in the past where they specced the panels as hi-integrity with no more than two connections to a stud and more than one stud plus an Earth reference bar, also built panels for the off shore and data centre industry which was fairly highly...
  3. spark 68

    Bonding Control panel

    I have used a lot of Rittal panels, the back plates we normally drill and tap for 8mm brass bolts from the back and then lock-nutted from the front before the back plate is fitted, but to be fair it depends on the spec. Some are specced completely overkill, so I feel your pain ;)
  4. spark 68

    Bonding Control panel

    I have seen it specced that no more than two connections to a stud before, usually in cases like that we have either/and/or added another stud and/or a separate Earth bar/block. Then we have had "discussions" ;) regards high integrity Earthing as far as the panel itself went, which was valid up...
  5. spark 68

    Find electrician to trace earth leakage

    If, and I mean if the IR tests were carried out correctly and showed no appreciable faults then where does the "earth leakage off the scale" come from ? What I have seen done, is a spark/s with their shiny new earth leakage meter then proceed to clamp the MEC with it (instead of just the tails)...
  6. spark 68

    Gauge Speaker Wires: Clueless

    I may be wrong here but those ceiling speakers are often 100v line speakers, see if they have a transformer attached.
  7. spark 68

    BS 1363 socket circuit

    Actually there may be something in the BS1363 standard as well that precludes this, however I don't have access to that standard so don't quote me on this :)
  8. spark 68

    BS 1363 socket circuit

    Oh I am not arguing spin :) ffs we have had people on here who disagree with SB and lowering Zs, or think it is dangerous ffs, never seen a lollipop circuit before, trying to invent even more regs the list goes on and on! welcome to the new breed of "super sparks" :p IMO, and it is only an...
  9. spark 68

    BS 1363 socket circuit

    Certain ones may do, I couldn't swear to what does what these days :) but still it is perceived as a 'bad design' when a typical RFC is designed for 32A only, it may lead to queries and condemnation by future sparks down the line :), seriously though I would stick to conventional circuits...
  10. spark 68

    BS 1363 socket circuit

    There may be diversity to be applied here, but still I would probably cut that circuit into at least either two RFCs or into two or more radials to suit, especially if you know there is likely to be frequent overloads, not so much the kettles, which maybe only on short term, but more the tea...
  11. spark 68

    BS 1363 socket circuit

    Ok my curiosity has got the better of me :) why would you want to do that? Good luck with terminating 2X 6mm^ in most S/Os these days
  12. spark 68

    Help from Forum support staff

    Cynical ? moi ? ;) good luck with the niccy and others, you do realise you will be killing their cash cow ?
  13. spark 68

    Starting to become self employed (own)

    I ended up back on cards in after 6 years, less stress and more time (just a little) for family and stuff. Not trying to dampen your enthusiasm btw, you gotta try it or you will never know :) good luck btw
  14. spark 68

    How to test a circuits in steel conduit as the cpc

    As another poster earlier had said re: 'ductor testing joints in conduit, I have had to do this twice back in the day, what a mind numbing and boring job that was :( Later with more modern MFTs that cut-out if the CPC rises above 50V (or 25V if you set it up that way) we have on occasion just...
  15. spark 68

    How to test a circuits in steel conduit as the cpc

    Probably, as plastic services mean that caveat no longer applies in most cases, and we are now reying solely on RCDs ;) , god how I wish the IET would sort their existing s**t out before introducing new regs ;)
  16. spark 68

    How to test a circuits in steel conduit as the cpc

    So spin, in the 18th it looks like they have combined the Ut and disconnection time into one reg. Really since the 17th first came out the SB rules were relaxed in domestic subject to certain caveats (rcd being only one) which we were all glad about re: god awful G/Y everywhere in bathrooms ;)...
  17. spark 68

    How to test a circuits in steel conduit as the cpc

    In the brown book 16th 413-02-15 is deleted in 1992 amd2 This reg is present in the green book amd1: 1992 16th though, and says pretty much the same as the blue book above (which I also have). The 16th was a bit strange as there was at least one reset in between the green book amd 1 :1992...
  18. green book 16th.jpg

    green book 16th.jpg

    • spark 68
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    • Category: Electrical Videos
  19. brown book 16th.jpg

    brown book 16th.jpg

    • spark 68
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    • Comments: 0
    • Category: Electrical Videos
  20. spark 68

    How to test a circuits in steel conduit as the cpc

    No, I could get my 16th editions out, but as the disconnection times part are still in the current edition and GN8 for the 17th amd 3 there is not much point really, I will look up the regs spin posted up later, and see what actually changed.

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