Columbia, South Carolina-based Shealy Electrical Wholesalers has opened its first Raleigh location. David White, company president, tells me the strategy behind the decision to locate here is about having "complete geographic coverage of the Carolinas." The firm has 17 locations throughout North and South Carolina. The new facility will initially house 10 employees, some of whom will be coming from Shealy's other locations. And this particular office will serve Duke Energy Progress, he…