I am upgrading my 100A to 200A and also move it to a new location. The electrician mounted the new 200A panel on the wall, ran #6 wires from new panel to ground for grounding and ran wires from new meter to behind the old meter then stopped there. I then called city for inspection. Two inspectors came, one as a trainee, another is trainer. They inspected and finally gave me a correction note with 2 things. First is the ground wire for 200A must be #4. Second the breakers must have labels. I called the electrician and he said he would correct this but he said he did everything right by the book. He said how could he label breakers in new panel when he didn't know yet what new circuit to what old circuit. He said probably the inspectors came as training so the old guy must kind of show up to the new guy! Is this him or the inspectors right for the size of ground wire. I thing it is silly to ask for labelling new breakers but, I want it's done so I will put some labels to have them passed.

Sked 40 PVC riser through a 4" slab - should I use any type of "buffer" material between the conduit and concrete?