What must be checked if a transmission outage was caused by tree contact?

When a transmission outage is caused by tree contact, it is essential to check the box for vegetation trip because this action is related directly to identifying and addressing the root cause of the outage. Vegetation management is a critical aspect of maintaining the reliability of the transmission system. By checking this box, it indicates that a vegetation-related issue led to the outage, which can help in assessing future risks and analysis.

This process ensures that appropriate measures can be taken to prevent similar outages in the future by analyzing the location of the incident, understanding the effects of vegetation, and implementing necessary maintenance or clearing actions. Maintaining proper clearance from vegetation is vital for the safety and reliability of transmission lines, minimizing the likelihood of future events that could disrupt service.

Other options, while they may be important in specific contexts, do not directly address the immediate action necessary in response to tree-related outages and prioritizing steps to manage vegetation effectively.