Level 3 Commissioning, also known as Startup, primarily involves which activity?

• A. Full building load simulation using load banks.
• B. Energization and startup of the equipment to ensure proper installation and readiness for additional Cx activities.
• C. Decommissioning and removal of equipment.
• D. Detailed electrical code compliance review.

Answer: (B)

Level 3 Commissioning, or Startup, centers on energizing the system and getting the equipment up and running for the first time after installation. This phase verifies that power connections and control circuits are correct, safety interlocks and control sequences operate properly, and the equipment can start and run as intended. It establishes that the installation is sound and ready for the next steps in commissioning, such as functional and performance testing. Full load testing with load banks is a more extensive assessment that typically follows startup, while decommissioning is the opposite of starting up. A detailed electrical code review is important, but startup focuses on real operation and readiness for subsequent commissioning activities.