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How closely does BS 7671 track IEC 60364?

wallywombat
I understand that BS 7671 is notionally derived from IEC 60364, but how closely does it actually track it? The Wikipedia page for IEC 60364 shows that it has many of the same chapters, although for example some of the part 7 sections are missing / different.


So for example if I looked at section 521 say in both standards, would I expect to see the exact same sequence of 521.x.y.z's (apart from the occasional .20x) with exactly the same content?


Also, how are amendments handled? E.g. for the proposed Amendment 2 changes, are these things that have already been added to IEC 60364 (such as part 8) and are now migrating into BS 7671? Plus I guess some things that the IET has proposed on their own? For the latter, will they be added unilaterally to BS 7671 then might get backported to to IEC 60364 at some point in the future if the IEC approve? And if they don't approve, we just live with the divergence?
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    Thanks for that, Graham.

    So, is this right:

    BS 7671 very closely tracks HD 60364, less SNCs and plus local additions (e.g. .201's).

    HD 60364 less closely tracks IEC 60364, with SCNs allowing divergence.

    In amendments, the IET may add extra local stuff to BS 7671, but can't take stuff away without prior agreement. Such changes can later  be suggested to the CENELEC committees who may pass them to the IEC who may or may not adopt them

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    Thanks for that, Graham.

    So, is this right:

    BS 7671 very closely tracks HD 60364, less SNCs and plus local additions (e.g. .201's).

    HD 60364 less closely tracks IEC 60364, with SCNs allowing divergence.

    In amendments, the IET may add extra local stuff to BS 7671, but can't take stuff away without prior agreement. Such changes can later  be suggested to the CENELEC committees who may pass them to the IEC who may or may not adopt them

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