SHOCKS FROM EVS OR CHARGING EQUIPMENT

Good evening everyone.

I am doing some research in to events where any person has received a tingle (perceived shock) or a more serious shock from an EV on charge, or from EV changing equipment.

I would be most grateful to receive any details of such an event? Please email me on info(the symbol for at)astutetechnicalservices.co.uk

Thanks

JP

Parents
  • Presumably you're not interested in shocks from static electricity (which used to be common with ICE vehicles years ago). Not always easy to tell the difference if you've not experienced both.

      - Andy.

  • Morning Andy

    I am looking for events where the EV is plugged in to a charging point. In these circumstances the vehicle will be/should be connected to earth so highly unlikely to build up a static charge.

    JP

  • They may still get the odd static related zap however, because  people may become charged with respect to Terra-firma from friction charging (the triboelectric effect) if wearing the right kind of insulating flip flops in dry weather, and then feel something as a short sting if they earth themselves though the car, or anything else for that matter. Not common outdoors in the UK as its not often dry enough, but possible a few days per year.
    Even unplugged, a stationary car is loosely earthed from an electrostatic point of view if the tyres are not factory clean and bone dry.
    However, far higher voltages ~ 100kV  can accumulate while a car is moving on the right sort of surface. Modern up-market tyres include either carbon black or deliberate conductive stripes to mitigate this .- for levels of 'conductive' at the multi megohm level, so things can only discharge slowly. 

    Mike.

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  • They may still get the odd static related zap however, because  people may become charged with respect to Terra-firma from friction charging (the triboelectric effect) if wearing the right kind of insulating flip flops in dry weather, and then feel something as a short sting if they earth themselves though the car, or anything else for that matter. Not common outdoors in the UK as its not often dry enough, but possible a few days per year.
    Even unplugged, a stationary car is loosely earthed from an electrostatic point of view if the tyres are not factory clean and bone dry.
    However, far higher voltages ~ 100kV  can accumulate while a car is moving on the right sort of surface. Modern up-market tyres include either carbon black or deliberate conductive stripes to mitigate this .- for levels of 'conductive' at the multi megohm level, so things can only discharge slowly. 

    Mike.

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