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EV CHARGING EQUIPMENT

John Peckham
I am hearing from my network of contractors, that have actually read the new 722, that they have been asking charging equipment manufactures for documentary proof to comply with Note 5 of 722.411.4.


They are getting knocked back for asking or in one case a Declaration that says the particular device complies with BS 7671. I think that is wrong to declare that as BS 7671 is an installation safety standard and not a product standard. I believe that as a minimum the equipment must comply with the Low Voltage Directive and be CE marked. I also believe that manufacturers have to issue a Declaration of Conformity. 


BS 7671 722 has numerous references to the various standards required such as BS EN 61851 that the equipment must comply with. I am thinking it may be illegal to offer the sale of equipment that does not comply with the Low Voltage Directive and is not CE marked?


I am hoping the countries top man of equipment safety standards, Paul Skyrme , sees this post and will come on and give us his expert view?


Has any forum member asked for a Declaration of Conformity from EV charging equipment manufacturers and received one?
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  • Former Community Member
    0 Former Community Member
    To what extent is class 1 vehicles + TNC-S a UK specific problem? So far as I know much of France and Italy are almost entirely TT, the Americans do all kinds of weird things but a lot of their domestic supplies are quasi-PNB, bits of eastern Europe seem to be TNC or TT if earthed at all. MPJ will be able to tell us what the Germans do. I know Australia uses a TNC-S variant but with many more earth rods because they require them at the customer intake. Much of Europe also have lower-current 3-phase supplies and consequently modest neutral currents and easy detection of lost neutral. The most common car charger in the UK is 7 kW, 32 A single phase, the equivalent in most of Europe is 11 kW, 16 A 3-phase.


    Is the problem mostly just that we as a country have odd earthing (and large single phase supplies) and the car manufacturers have no motivation to worry about it for a small market?
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  • Former Community Member
    0 Former Community Member
    To what extent is class 1 vehicles + TNC-S a UK specific problem? So far as I know much of France and Italy are almost entirely TT, the Americans do all kinds of weird things but a lot of their domestic supplies are quasi-PNB, bits of eastern Europe seem to be TNC or TT if earthed at all. MPJ will be able to tell us what the Germans do. I know Australia uses a TNC-S variant but with many more earth rods because they require them at the customer intake. Much of Europe also have lower-current 3-phase supplies and consequently modest neutral currents and easy detection of lost neutral. The most common car charger in the UK is 7 kW, 32 A single phase, the equivalent in most of Europe is 11 kW, 16 A 3-phase.


    Is the problem mostly just that we as a country have odd earthing (and large single phase supplies) and the car manufacturers have no motivation to worry about it for a small market?
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