Hmm, it needs more than a competent electrician. I've never had anything involving industrial electric work go right enough not to justify bringing down services in a controlled manner.
Its needs the install to be 100% documented and understood. A lot of operators do the work, file the map and ... forget about it. Then you have someone plug in other stuff etc etc etc.
It should not happen but it does. Understaffing, personnel churn.
The main point is that this business runs on electricity. Anything that goes wrong whacks the business.