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Details of BS7671:2018 Amendment 1 are here.

Alan Capon
Details of Amendment 1 of BS7671:2018 is available here: https://electrical.theiet.org/bs-7671/updates/


Regards,


Alan.
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    Chris Pearson:




    gkenyon:




    Somewhere on the planet it is daytime, somewhere it is night time, somewhere it is raining, somewhere it is snowing, somewhere it is sunny, somewhere it is winter, somewhere it is summer.




    Made me think of the Seekers - Morning Town Ride (starting at the bit I time-linked to ... the following verse at 1:24 starts "Somewhere it is night time, somewhere it is day ...").


    Sad, I know ... something my Mum used to sing to me when I was a toddler, and we sang to our kids when they were toddlers ?




    Splendid - not even the New Seekers!


    Back on topic, all the above confirms my belief that the situation has become, or is being made too complicated.


    EV charging installations were never that easy, but no fault of BS 7671 per say




    And what of 3-phase? Let's say that you have 3-phase at home and do your best to balance the phases. Whilst the car is charging, the phases will be sufficiently balanced to keep the neutral voltage down; but when you plug in or disconnect, the same does not necessarily hold true.


     




    In that case, 722.411.4.1 (i) clearly does not hold apply.


    For larger installations, it may, however, be practicable. There will be additional guidance, and a rule of thumb, to help make that decision, in the 4th Edition of the IET CoP.

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  • 0

    Chris Pearson:




    gkenyon:




    Somewhere on the planet it is daytime, somewhere it is night time, somewhere it is raining, somewhere it is snowing, somewhere it is sunny, somewhere it is winter, somewhere it is summer.




    Made me think of the Seekers - Morning Town Ride (starting at the bit I time-linked to ... the following verse at 1:24 starts "Somewhere it is night time, somewhere it is day ...").


    Sad, I know ... something my Mum used to sing to me when I was a toddler, and we sang to our kids when they were toddlers ?




    Splendid - not even the New Seekers!


    Back on topic, all the above confirms my belief that the situation has become, or is being made too complicated.


    EV charging installations were never that easy, but no fault of BS 7671 per say




    And what of 3-phase? Let's say that you have 3-phase at home and do your best to balance the phases. Whilst the car is charging, the phases will be sufficiently balanced to keep the neutral voltage down; but when you plug in or disconnect, the same does not necessarily hold true.


     




    In that case, 722.411.4.1 (i) clearly does not hold apply.


    For larger installations, it may, however, be practicable. There will be additional guidance, and a rule of thumb, to help make that decision, in the 4th Edition of the IET CoP.

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