The vast majority of the time when an overload trips, there is a reason for it. I hate getting work orders stating the overload keeps tripping. If they had called for an electrician in the 1st place, the problem could have been taken care of 2 or 3 days before they damaged a piece of equipment and caused even more down time.
Also, in the Great State of Michigan, it is against the law to do electrical work without being properly licensed by the State.