A Technical Field Advisor (TFA) working on Wind Turbine Generators typically performs the following key roles and responsibilities:

1. Supervises the installation of a technical discipline at the installation site.
   
2. Provides technical advice, guidance, and recommendations based on OEM's procedures and drawings during assembly and installation.
   
3. Verifies and ensures correct performance of activities by the contractor at the project site.
   
4. Conducts a supplemental review for affected crew in case of significant turnover, assessing the assembly units involved.
   
5. Executes installation tasks as per predefined steps, documenting the process accordingly.
   
6. Handles specialized tasks like welding, if required.
   
7. Takes and documents predefined measurements during the installation process.
   
8. Demonstrates knowledge of basic electrical troubleshooting.
   
9. Maintains professional relationships with clients and Balance of Plant (BOP).
   
10. Keeps a daily log to document activities and progress at the project site.