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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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    This is all explained in Annexes H and I of the 4th Edition of the EV CoP. Very briefly



    I think I understand the thinking, but isn't this going way beyond BS 7671's requirements?


    If my existing installation happened to be TT - than according to BS 7671 itself, can't I just connect up a charge point without any further consideration as far as earthing is concerned? Likewise if I had reliable TN-S (private transformer say) - even though the system's Earth reference could be tens or hundreds of metres from the EV parking space (which may or may not be influenced by some buried metalwork).


    If PME voltages from buried services could be hazardous, shouldn't we have seen some incidents from other situations where a touch potential from several metres away could be simultaneously accessible - such as metal gates hung on metal posts or the tubular steel handrails often seen linking street to front door outside 'pensioner's bungalows'?


        - Andy.
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  • 0

    This is all explained in Annexes H and I of the 4th Edition of the EV CoP. Very briefly



    I think I understand the thinking, but isn't this going way beyond BS 7671's requirements?


    If my existing installation happened to be TT - than according to BS 7671 itself, can't I just connect up a charge point without any further consideration as far as earthing is concerned? Likewise if I had reliable TN-S (private transformer say) - even though the system's Earth reference could be tens or hundreds of metres from the EV parking space (which may or may not be influenced by some buried metalwork).


    If PME voltages from buried services could be hazardous, shouldn't we have seen some incidents from other situations where a touch potential from several metres away could be simultaneously accessible - such as metal gates hung on metal posts or the tubular steel handrails often seen linking street to front door outside 'pensioner's bungalows'?


        - Andy.
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