What is a catenary lightning protection system?

A catenary lightning protection system is designed to protect structures from lightning strikes by utilizing a network of conductive wires that are typically installed above the structure. This overhead configuration allows the wires to intercept lightning strikes before they can reach the structure itself, effectively guiding the electrical discharge safely to the ground.

The system's structure often resembles a catenary curve, where the wires hang from tall supports, creating a series of conductive paths. This arrangement is instrumental in redirecting the electrical energy of a lightning strike, thereby minimizing potential damage to the building and ensuring the safety of occupants. By having the wires above the structure, the system can provide a more effective barrier against direct lightning strikes.

The other choices do not accurately represent the function or construction of a catenary lightning protection system, which is fundamentally about overhead protection using conductive materials.