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Outstandng 18th Oddities

AJJewsbury
As far as I recall, we still have some unanswered questions about some of the changes in the 18th. Does anyone have any further information about these? (If not at least this post should ensure the issues aren't forgotten with the demise of the old Forum.)


From memory there was at least:


461.2
  1. The intended meaning of the phrase "neutral conductor is reliably connected to Earth by a low resistance to meet the disconnection times of the protective devices" (given that the Part 2 definition of "Earth" is conductive mass of the Earth rather than any protective conductor or MET; and which protective devices are we talking about anyway?)

  • Also "protective equipotential bonding is installed" - is this intended to mean it actually is installed, or is installed where it is required? (Otherwise new installations with plastic pipes would need N isolation everywhere)


531.3.6 - if it the intention to prohibit the use of Socket RCDs and similar (e.g. FCU RCDs) for additional protection? (being that the generally comply with BS 7288 etc which appears to have a slightly different set of technical requirements to the standards listed)


537.3.2 - Switching off for mechanical maintenance. Although the definition of mechanical maintenance remains unchanged - so continues to include simple relamping - the requirements have changed considerably to the point they just about require complete electrical isolation. Thus a common lightswitch is no longer suitable for switching off for replacing a domestic lamp. Was this really the intention? Or are the changes aimed more at rotating machinery? Given that most householders would prefer not to plunge and entire floor let alone the complete installation into darkness to replace a simple lamp, should we be installing switches rated for isolation in every room?


any others?


   - Andy.
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  • 0
    Don`t beat about the bush here. If you have critisms let`s hear them ?


    Oh man! Where to begin!


    Having been a time-served apprentice from 77-81 in the aerospace industry, working on a widen spectrum of kit, then moving to self-employed status back in 2002 I don't know where to begin.

    I did the 15th during my wee pappy youth stage, then qualified to the 16th and 2391 when I moved to self-employment, the whole plot has gone downhill since without good reason other than to screw up the clarity for those at the 'coal face'.. At least it seems that way.


    It isn't just in our sector either. The phenomena seems to prevail across the board, which leads me to ask the question: are we being run by a shower of incompetent fools? Or is someone out there deliberately trying to ferk this country up?


    Local Govt, NHS, Police, law & order, local authorities, the judicial system, etc etc.

    At one time, we could run things pretty smoothly without unnecessary interference, but have you noticed that what formerly worked, albeit imperfectly, actually worked, but no longer does?

    There seems to be a deliberate blurring of the edges whereby confusion and disarray are introduced into what was formerly an adequate but imperfect system which was well-founded on first principals but which now results in a paralysis of understanding of what would have previously been accurately predicted outcomes.

    It is as if chaos has been deliberately introduced to all of our vital systems.

    The latest wiring regulations are an archetypal example of this in my view.


    To summarise, the sad thing is; that when regulations become so incomprehensible to those who have to apply them, then they are ignored.
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  • 0
    Don`t beat about the bush here. If you have critisms let`s hear them ?


    Oh man! Where to begin!


    Having been a time-served apprentice from 77-81 in the aerospace industry, working on a widen spectrum of kit, then moving to self-employed status back in 2002 I don't know where to begin.

    I did the 15th during my wee pappy youth stage, then qualified to the 16th and 2391 when I moved to self-employment, the whole plot has gone downhill since without good reason other than to screw up the clarity for those at the 'coal face'.. At least it seems that way.


    It isn't just in our sector either. The phenomena seems to prevail across the board, which leads me to ask the question: are we being run by a shower of incompetent fools? Or is someone out there deliberately trying to ferk this country up?


    Local Govt, NHS, Police, law & order, local authorities, the judicial system, etc etc.

    At one time, we could run things pretty smoothly without unnecessary interference, but have you noticed that what formerly worked, albeit imperfectly, actually worked, but no longer does?

    There seems to be a deliberate blurring of the edges whereby confusion and disarray are introduced into what was formerly an adequate but imperfect system which was well-founded on first principals but which now results in a paralysis of understanding of what would have previously been accurately predicted outcomes.

    It is as if chaos has been deliberately introduced to all of our vital systems.

    The latest wiring regulations are an archetypal example of this in my view.


    To summarise, the sad thing is; that when regulations become so incomprehensible to those who have to apply them, then they are ignored.
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