Regulation 411.3.1.1

Hi Guys,

Hopefully a simple one to answer.

Can 'the same earthing system' described in Regulation 411.3.1.1 be satisfied if both supplies originate from the same DNO PME cable in the street, for example where 2 neighbours are both charging their EV's on the drives which are side by side or a drive is next to a metal lamp post already installed on the street?

Regards

Mark

Parents
  • At some point there's going to be a push back against requirements that are impossible to achieve.

    You can plonk a caravan on your driveway and hook it up to a Commando socket.  So long as the socket is fed by an RCD, nobody bats an eyelid.

    But the rules for EV chargers seem to become more onerous with every amendment to BS7671.  You have to have the right sort of RCD.  And PEN fault detection.  If someone says you can't buy an EV because your neighbour has one, then people will just say "sod it".  They will buy a bootleg "granny lead" off Aliexpress, and plug it into the power socket they normally use for their lawnmower.

    And nobody will stop them, because it's nobody's job to stop them.

  • At some point there's going to be a push back against requirements that are impossible to achieve.

    I guess some folk buy these sort of things off amazon and dob them into a spare MCB or fuseway already and maybe fail to tell anyone...

    In some parts of the planet regulations are not followed that well already. And because its not a problem, after all cars kill far more people mechanically than electrically, and that is not such a problem that society stops,  the situation will continue.

    If you want  less controversial UK examples, look at the drive by flat EICR thing, or folk who put PAT stickers on everything willy nilly - scarcely worth it in terms of lives saved, so not worth chasing the irregularities too strongly. Or perhaps some aspects of part P ;-)

    M.

  • Hi Mike,

    'look at the drive by flat EICR thing' 

    Unfortunately this is extremely common and even more so by some of the biggest in the industry who due to paying per additional circuit, have guys reportedly fully testing and inspecting an impossible amount circuits every day and no one thinks to question it as long as the boxes are ticked.

Reply
  • Hi Mike,

    'look at the drive by flat EICR thing' 

    Unfortunately this is extremely common and even more so by some of the biggest in the industry who due to paying per additional circuit, have guys reportedly fully testing and inspecting an impossible amount circuits every day and no one thinks to question it as long as the boxes are ticked.

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