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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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    Great deliberation and effort by installation and product engineers is obviously being directed at the consequences of loss of neutral on a TN-C-S system. I wonder if such focus is being applied by the network engineers in the DNOs in respect of their statutory obligation under ESQCR to take all reasonable precautions to ensure continuity of their neutral. Indeed, my reading of 7671 regulation 114.1 was that the designer of an electrical installation could make the assumption that the DNO neutral was permanent.

    If a network neutral is lost then it is highly likely that there has been a weakness in the safety system applied by the distributor and that a breach of statutory obligation could be identified. If, as reported, there is one loss of neutral incident per day, then clearly there is an issue on the network side. That issue really shouldn’t result in unnecessary fixes on the consumer side. Rather, if the government want expeditious roll-out of EVs then perhaps the HSE should be directed to vigorously clobber each loss of neutral incident.
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    Great deliberation and effort by installation and product engineers is obviously being directed at the consequences of loss of neutral on a TN-C-S system. I wonder if such focus is being applied by the network engineers in the DNOs in respect of their statutory obligation under ESQCR to take all reasonable precautions to ensure continuity of their neutral. Indeed, my reading of 7671 regulation 114.1 was that the designer of an electrical installation could make the assumption that the DNO neutral was permanent.

    If a network neutral is lost then it is highly likely that there has been a weakness in the safety system applied by the distributor and that a breach of statutory obligation could be identified. If, as reported, there is one loss of neutral incident per day, then clearly there is an issue on the network side. That issue really shouldn’t result in unnecessary fixes on the consumer side. Rather, if the government want expeditious roll-out of EVs then perhaps the HSE should be directed to vigorously clobber each loss of neutral incident.
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