Which of the following roles primarily focuses on commercial and industrial facilities?

The role that primarily focuses on commercial and industrial facilities is the inside wireman. This position is critical in electrical installations and maintenance within buildings that serve business and industrial purposes. Inside wiremen are skilled electricians responsible for working with electrical wiring systems that are installed within these facilities, ensuring they comply with safety standards and function properly.

Inside wiremen typically handle tasks such as installing lights, circuits, and electrical panels, as well as troubleshooting issues related to these systems. Their expertise is particularly valuable in industrial settings where complex electrical needs and high-voltage systems are commonplace.

In contrast, other roles listed do not specifically target the same scope. For instance, service technicians might work in residential settings or perform repairs across a variety of environments but do not solely focus on commercial and industrial systems. Heavy equipment operators typically handle machinery used in construction projects rather than electrical installations. Project managers oversee projects from a broader perspective, including planning, execution, and resource management, which may or may not involve direct electrical work. Thus, the inside wireman is uniquely positioned to specialize in commercial and industrial facilities.