Who is responsible for Construction Phase Monitor Controls Install?

• A. Contractor
• B. Shared
• C. CxT
• D. CxA

Answer: (C)

In construction phase, the on-site monitoring of control installations is done by the Commissioning Technician (CxT). This role is the hands-on observer who verifies that control wiring, sensors, actuators, and the control sequences are installed correctly, wired to the right points, and configured to match the design and sequences. The CxT documents observations, supports functional checks, and helps ensure installations are ready for testing and commissioning.

The overall responsibility for the commissioning process, including ensuring the project meets owner requirements and coordinating all test plans, sits with the Certified Commissioning Authority (CxA). The contractor is responsible for performing the actual installation work, while the CxA provides oversight and accountability for the entire commissioning effort. So, for monitoring and witnessing the installation of controls during construction, the CxT is the best-fit role.