An EICR is carried out to the most recent edition of BS 7671. It is entirely irrelevant to what ever previous standard the installation may or may not have complied with.
If you find a plastic consumer unit or red and black wiring then it doesn’t comply with the current edition of BS 7671 and needs to be noted on the EICR.
Just because something doesn’t comply, it does not mean it is unsafe or automatically needs rewiring, and you can still issue a satisfactory EICR.
If you take in to consideration previous standards, then this which I found in a school presumably would be ok as it complied when it was installed?
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Lead sheathed cable protected by single pole fuses in both the line and neutral inside an enclosure with live parts which can be accessed without the use of a tool or key.
This has never complied with BS7671 which started in 1992. I looked at BS7671:2001 and it did not actually give a start date accept June 2001 and as said there was a list of CENELEC harmonization documents and reference to Electricity at work regulations 1989 so it does seem there is a limit to how far back one can go before other regulations also take over, this will also include the latest edition where it incorporates fire regulations and how they change what is required, so in general we need to remember BS7671 has altered through the years in order to line up with other regulations and laws.
However both BS7671:2008 and BS7671:2018 give dates as to when design has to follow that edition, I can't find the same in BS7671:2001 so it does seem as if BS7671:2001 is the earliest edition we can work to. I still have a copy and can't find the same phases used in BS7671:2008.
So two points because after 2001 the books have a set date after which a design must comply with the book also clearly you are complying with the versions after 2001 if the installation was designed designed before 30th June 2008 and it complies with BS7671:2001 then it still complies, and second is your looking for prospective danger to issue a C2 not non compliance with BS7671:2018, there was a code 4 which was for when the installation did not comply with current edition but did comply with previous edition, this code was removed, we no longer need to tell anyone it does not comply with current edition.
BS 7671:2008 said:
Existing installations that have been installed in accordance with earlier editions of the Regulations may not comply with this edition in every respect. This does not necessarily mean that they are unsafe for continued use or require upgrading.
This is a double edged, as the "necessarily" bit means it could or could not be unsafe.
BS 7671:2001" said:
110-04-01 The Regulations are non-statutory regulations. They may, however, be used in a court of law in evidence to claim compliance with a statutory requirement. The relevant statutory provisions are listed in Appendix 2 and include Acts of Parliament and Regulations made thereunder. In some cases Regulations may be accompanied by Codes of Practice approved under Section 16 of the Health and Safety at Work etc. Act 1974. The legal status of these Codes is explained in Section 17 of the 1974 Act.
For a supply given in accordance with the Electricity Supply Regulations 1988 as amended, it shall be deemed that the connection with earth of the neutral of the supply is permanent. Outside Great Britain, confirmation shall be sought from the supplier that the supply conforms to requirements corresponding to those of the Electricity Supply Regulations 1988 as amended, in this respect.
This also refers to other documents, which may mean we do have to comply with some of the changes.
The Part P regulations have referred to a version of BS7671 but also refer to equivalent as at the time we were members of the EU so you could comply if you wanted with German regulations, if you can read German that is, the same problem in Wales to be valid there must be an edition written in Welsh, I only read the odd Welsh word so no good to me, but unless published in Welsh not valid in Wales. They have enough problems translating road signs,
Welsh-speaking cyclists were told that they had problems with an
'inflamed bladder' by a temporary bilingual road sign between Cardiff and Penarth. Instead of the Welsh translation telling cyclists to dismount it actually read
"bladder disease has returned". What do you think are the chances of translating the whole of BS7671 without errors?