EV Charging post AMD2

[Marty92]

Hi all,

Looking at this again…

As most now know the industry is spit on EV Charging and Pen fault detection!

Given there is no standard for O-PEN devices and I am yet to see one which is sold legally, i.e. CE or UKCA certified with an appropriate deceleration of conformity why do some install them?

Amendment 2 seeks to give the installer a bit of protection by providing a suggested set of documentation to attach to the EIC but why would should we be happy to install kit which contravenes statutory legal requirements?

To my mind the only way to safely install an EV charge point is on a TT system or with the point itself with a rod, that has its own problems with proximity to buried metallic services.

Why as an industry have we let it get to a point where installers are actively asked to breach statutory documents?

 

[LastManOnline]

On a video from David Savery when he installed an EV charger, he went on a little rant about why PEN faults are not an issue for EVs, due to the charger points CPC not being bonded to the cars body/chassis but instead the DC battey ground is bonded the car body/chassis and there is isolation (via transformer) between the AC/TNCS CPC/Earth and the DC ground, I have no idea how true this is , but would be very interesting if it is true, even if only for some cars

Interestingly,the INDRA EV charger has an option the installer can choose where the circuit CPC is broken under open PEN faults ,thus ensuring the car metalwork is voltage free.Breaking the CPC? Thats more than a lttle revolutionary ,but if it can be done safely , I,m for it as I find it preferable to some of the current "safety measures" in use for EV chargers

 

[pc1966]

Breaking the CPC? Thats more than a lttle revolutionary ,but if it can be done safely , I,m for it as I find it preferable to some of the current "safety measures" in use for EV chargers

That is basically how the Matt:e and similar work, the major difference I guess is how they detect the open PEN condition.

Going TT is doing that from the outset by providing an alternative means of earthing (the rod).