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PME vs TT for charger

Can someone please explain in common scence English (this has to be explained to a customer) ..  why it is permissible for a street light , which in itself is basically a big metal earth rod buried 5 feet in the ground.. is allowed to be PME`d  (customer used to install street lights) yet his charger has to be TT`d  and isolated from the PME at all costs..  his parking space has a street lamp smack in the middle of it ???  I neither agree or disagree with the instructions to do so… just need something in writing to show the customer to prove im not just generating extra income needlessly..

Gary
 
Parents
  • Valid point Bod but that is what I am getting at. There has to be a coordinated approach. Legislation provides a helpful hand to but it obviously has to be a thoroughly considered, comprehensive, overall  plan that is proffered. 

    By the way, the overspec on disabled parking bays as a result of legislation and the lack of their use in operation is a salutary reminder that things need to be kept under constant review.
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  • Valid point Bod but that is what I am getting at. There has to be a coordinated approach. Legislation provides a helpful hand to but it obviously has to be a thoroughly considered, comprehensive, overall  plan that is proffered. 

    By the way, the overspec on disabled parking bays as a result of legislation and the lack of their use in operation is a salutary reminder that things need to be kept under constant review.
Children
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