Which division encompasses specifications relevant to mechanical devices that need electrical connections?

The correct choice pertains to Division 15, which addresses specified requirements related to mechanical devices that require electrical connections. Division 15 covers various mechanical systems, including heating, ventilation, and air conditioning (HVAC) systems. Since many of these systems involve electrical components and interfaces, this division outlines the standards and specifications necessary for their installation and integration.

Understanding the other divisions can help clarify this concept further. Division 14, typically associated with conveying systems, focuses primarily on the mechanical aspects rather than electrical connections. Division 16 pertains specifically to electrical systems and components, but it does not encompass the specifics related to mechanical devices needing electrical connections. Division 13 generally covers special construction, which may not directly relate to mechanical systems requiring electrical interfaces.

By recognizing the focus of Division 15 on the integration of mechanical systems with electrical requirements, it becomes clear why this division is the most appropriate answer for the question regarding specifications relevant to mechanical devices that need electrical connections.