Reference Information
Key information from reference documents and guides (e.g.) or succinct descriptions of concepts (e.g. what is risk and how do I visualize it)
Lightning Performance Targets and Structure Footing Resistance Targets
Transmission lines are designed with an expected lightning performance, also known as the lightning performance target. These are usually voltage dependent and vary from utility to utility. Similarly, the structure footing resistance is typically limited to reach the lightning performance target. This content summarizes the results from two surveys performed by EPRI showing lightning performance targets and structure footing resistance targets used by the surveyed utilities for different voltages.