My contractor ran a 220V line from a box in our garage, through the rear wall of the house, to the rear kitchen wall to power the microwave and oven. Although the wires are encased in a PVC conduit, the line is just laying on the ground.
My understanding is that NEC requires the line be covered by at least 8 inches of dirt. My contractor says the line is NEC compliant. I checked with a PE Electrical Engineer and he said "No Way."
Should the line be buried?