I've got my worries about using the current through the c.p.c. to trigger a shutdown (>18mA in that example) - how likely is it to false trip in the real world? I wondering that if the car happens to provide a parallel path to earth say either via wet/muddy/salty tyres or say an open door touching a steel bollard or lamppost - then you'd expect a reasonable amount of PME diverted N currents to flow from the installation/supply via the car's c.p.c. - if the charge point is going to trip out every time that happens they aren't going to be very popular.
I've got my worries about using the current through the c.p.c. to trigger a shutdown (>18mA in that example) - how likely is it to false trip in the real world? I wondering that if the car happens to provide a parallel path to earth say either via wet/muddy/salty tyres or say an open door touching a steel bollard or lamppost - then you'd expect a reasonable amount of PME diverted N currents to flow from the installation/supply via the car's c.p.c. - if the charge point is going to trip out every time that happens they aren't going to be very popular.
