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Which version of BS 7671 should I use?

AJJewsbury
I'm confused. Let's, for example, say I'm doing an upmarket domestic (complete with PV and EV) that's intended to be rented out and the work will be overseen by building control.


As I see it:
  • BS 7671 says I should use the latest version (subject to any transition periods when new versions are published) - so currently BS 7671:2018+A1:2020 (plus possibly a Corrigendum or so).

  • The ESQCR (as amended) demands that (because I have on-site generation operating in parallel with the mains) I comply with "British Standard Requirements" which it defines as BS 7671:2008 (17th Ed) (unamended).

  • AD P suggests that if I want a nice "deemed to comply" solution that BC will accept, I need to work to BS 7671:2008 incorporating Amendment No 1:2011.

  • As the property is going to be rented, the new "The Electrical Safety Standards in the Private Rented Sector (England) Regulations 2020" will have to be complied with, and that requires compliance with BS 7671:2018 (unamended).


So do I have to read four different versions of the Wiring Regs at once and try and come up with a design that simultaneously satisfies all four? (which I'm not sure would always be possible) and even if I did that which version should the certificate say it complies with?


  - Andy.
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  • 0
    And this is the joy of a legal precedent that does not permit "ambulatory legislation" (that is "moving goal posts" to the non lawyers ) - the regs version called up has to be fixed in time when the law is passed, to avoid a situation where the requirements of the law are changed by the action of a body that is neither parliament or a minister.

    (For example as there is no ministerial oversight of what goes into BS 7671, so as a noddy example if some rogue RCD or AFDD makers got their chaps on the committee  to mandate their products, then while that could end up in the next version of the regs, and that would be a pain, they could not say ' you must fit brand X  because it is now illegal not to' , as it would not be true, the law not having changed.)

    From time to time the govt does review things, and if all is well, they update the references in the legislation, usually by statutory instrument, so things are usually fairly up to date by legal standards ( that is to say most references are to the right century at least)


    As always, meanwhile you will have to make a professional  judgement, probably aiming at the latest where possible. In reality the correct system will probably mostly comply with the main features of all version,  but may well satisfy no single version on all points.
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    And this is the joy of a legal precedent that does not permit "ambulatory legislation" (that is "moving goal posts" to the non lawyers ) - the regs version called up has to be fixed in time when the law is passed, to avoid a situation where the requirements of the law are changed by the action of a body that is neither parliament or a minister.

    (For example as there is no ministerial oversight of what goes into BS 7671, so as a noddy example if some rogue RCD or AFDD makers got their chaps on the committee  to mandate their products, then while that could end up in the next version of the regs, and that would be a pain, they could not say ' you must fit brand X  because it is now illegal not to' , as it would not be true, the law not having changed.)

    From time to time the govt does review things, and if all is well, they update the references in the legislation, usually by statutory instrument, so things are usually fairly up to date by legal standards ( that is to say most references are to the right century at least)


    As always, meanwhile you will have to make a professional  judgement, probably aiming at the latest where possible. In reality the correct system will probably mostly comply with the main features of all version,  but may well satisfy no single version on all points.
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