George:
NFPA NEC 90-7 says: "It is the intent of this Code that factory installed internal wiring or the construction of equipment need not be inspected at the time of installation of the equipment except to detect alterations or damage, if the equipmkent has been listed by a qualified electrical testing laboratory.
For example Cutler Hammer in the installation instructions state that their connections should be tested for tightness. The reason they give is because in transportation they losten up. They state to test 10% and is they find 1 loose then proceed to test 100%.
I would suggest you advise your contractors to have a torque wrench available for the equipment inspections. What they will neglect the most are bus connections.
