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All Singing All Dancing E.V. Charger.

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Is this a good one?

https://www.bing.com/videos/search?q=Youtube+Artisan+electrician+EV+charger+install+Zappi+home&docid=608055082115925091&mid=AC8C58AA73CB9E199546AC8C58AA73CB9E199546&view=detail&FORM=VIRE


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    John Peckham:

    Yes Andy as the Note says, "it is the responsibility". So the designer or the specifier needs to demonstrate due diligence in the selection of the device. I think that obtaining a Declaration of Conformance listing compliance with all the standards specified in 722 and compliance with the Statutory provisions of the Low Voltage and EMC Regulations would provide a good level of protection for the designer. Of course if a manufacturer cannot do this you might want to look elsewhere. of course the products are required to be marked CA or CE or UKNI to be placed on the market for sale.


    JP raised this important issue. I went to NICEIC for some further advice. This is their reply;

    "Regulation 722.531.3.101 of BS 7671: 2018 amended 2020, requires that unless the protective measure of electrical separation is used, each charging point shall be protected by a 30mA Residual Current Device. Within the same Regulation it states that the RCD shall comply with one of the following British Standards; BS EN 61008-1, BS EN 61009-1, BS EN 60947-2 or BS EN 62423.


     


    There is some debate as to whether the RCD components installed within some manufacturers’ charging equipment comply with the above requirements.


     


    At this moment in time Note 5 of Regulation 722.411.4.1 places the emphasis of ensuring compliance squarely on the shoulders of the electrical designer/installer, as can be seen in the Note below;


     


    4b947293d0d986cb5a7347772db89ba1-original-image-20210323184041-1.png

     


    We would therefore agree with your suggestion of the installation of a recognised Residual Current Device upstream of the charging point, where any doubt exists. With regards to the issue of a lack of selectivity, so long as this does not cause a dangerous situation to occur, it would be acceptable. As the two RCDs are in series on a dedicated circuit, it would be difficult to envisage a dangerous situation, however as the installer this would be a decision that you would have to be satisfied with".



     
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  • 0
    John Peckham:

    Yes Andy as the Note says, "it is the responsibility". So the designer or the specifier needs to demonstrate due diligence in the selection of the device. I think that obtaining a Declaration of Conformance listing compliance with all the standards specified in 722 and compliance with the Statutory provisions of the Low Voltage and EMC Regulations would provide a good level of protection for the designer. Of course if a manufacturer cannot do this you might want to look elsewhere. of course the products are required to be marked CA or CE or UKNI to be placed on the market for sale.


    JP raised this important issue. I went to NICEIC for some further advice. This is their reply;

    "Regulation 722.531.3.101 of BS 7671: 2018 amended 2020, requires that unless the protective measure of electrical separation is used, each charging point shall be protected by a 30mA Residual Current Device. Within the same Regulation it states that the RCD shall comply with one of the following British Standards; BS EN 61008-1, BS EN 61009-1, BS EN 60947-2 or BS EN 62423.


     


    There is some debate as to whether the RCD components installed within some manufacturers’ charging equipment comply with the above requirements.


     


    At this moment in time Note 5 of Regulation 722.411.4.1 places the emphasis of ensuring compliance squarely on the shoulders of the electrical designer/installer, as can be seen in the Note below;


     


    4b947293d0d986cb5a7347772db89ba1-original-image-20210323184041-1.png

     


    We would therefore agree with your suggestion of the installation of a recognised Residual Current Device upstream of the charging point, where any doubt exists. With regards to the issue of a lack of selectivity, so long as this does not cause a dangerous situation to occur, it would be acceptable. As the two RCDs are in series on a dedicated circuit, it would be difficult to envisage a dangerous situation, however as the installer this would be a decision that you would have to be satisfied with".



     
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