What is the purpose of using main size cable conductor in lightning protection systems?

The purpose of using a main size cable conductor in lightning protection systems is primarily to minimize resistance. When designing a lightning protection system, it is critical to effectively conduct the electrical energy from a lightning strike to the ground. Using a larger conductor helps decrease the resistance of the path that the lightning energy travels through, which is essential in preventing significant voltage drop and ensuring that the energy of the lightning is efficiently dissipated into the ground.

Minimizing resistance is crucial not only for safety but also for the performance of the system. With lower resistance, the risk of overheating and potential damage to the system components is significantly reduced during a lightning event. This enhances the overall reliability and effectiveness of the lightning protection system, ultimately providing better protection for the structure it is designed to safeguard.