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