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EV Charging and loss of neutral

lyledunn
I mentioned in another post that I would contact HSE regarding any issues reported to them arising from loss of neutral and EV charging points. They have responded and confirmed that there has been no incident reported to them. However, they were made aware of a small number of situations that were a result of poor or no load management. I should point out that this is HSE in Northern Ireland.
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    UKPN:

    Loss of neutral and EV chargers, WOW! this should be interesting. What do the wiring regulations say??

    Regards, UKPNZap 


    Well it depends what wiring regulations you are referring to. Here in the North of Ireland we are in a perennial state of confusion with half the population wanting to remain in the U.K. and the other half thinking that the future would be better in an all-island republic. For the moment I can have one foot on ground  to which BS7671 applies while the Irish Regs is applicable to the ground on which the other foot stands. Despite your little quip, UKPN, I think that you know full well that there are several expansive ways proffered in BS7671 with respect to EV charging which are designed to address the issue of a lost neutral in a PME installation. The Irish Regs (IS10101: 2020) on the other devote only 3/4 of a line; “In TN systems the final circuit supplying a connecting point shall be a TN-S system”. My understanding is that this regulation is not modified from HD 60364-722

    Edit; maybe if GK reads this he could confirm or otherwise that last sentence.


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  • 0
    UKPN:

    Loss of neutral and EV chargers, WOW! this should be interesting. What do the wiring regulations say??

    Regards, UKPNZap 


    Well it depends what wiring regulations you are referring to. Here in the North of Ireland we are in a perennial state of confusion with half the population wanting to remain in the U.K. and the other half thinking that the future would be better in an all-island republic. For the moment I can have one foot on ground  to which BS7671 applies while the Irish Regs is applicable to the ground on which the other foot stands. Despite your little quip, UKPN, I think that you know full well that there are several expansive ways proffered in BS7671 with respect to EV charging which are designed to address the issue of a lost neutral in a PME installation. The Irish Regs (IS10101: 2020) on the other devote only 3/4 of a line; “In TN systems the final circuit supplying a connecting point shall be a TN-S system”. My understanding is that this regulation is not modified from HD 60364-722

    Edit; maybe if GK reads this he could confirm or otherwise that last sentence.


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