How should an interbuilding circuit be protected in areas prone to lightning exposure?

In areas prone to lightning exposure, protecting an interbuilding circuit with listed protectors on each end is essential to mitigate the risk of damage from lightning-induced surges. The reason this approach is favored is that it effectively reduces the potential for harmful overvoltage conditions that can occur when lightning strikes nearby or when there are electric surges in the environment.

Using listed protectors on both ends of the interbuilding circuit provides comprehensive protection by clamping the excess voltage and directing the surges away from sensitive equipment. This dual-protector strategy ensures that any surge entering or leaving the circuit will be handled effectively, minimizing the likelihood of damage to the circuit and the connected systems.

While grounding the entire circuit is important for safety and can reduce shock hazards, it alone does not adequately protect against surges. Grounding must work in concert with surge protection devices to be effective. Similarly, barrier insulators may help with dielectric strength but do not provide the necessary protective means against surges generated by lightning. Therefore, installing listed protectors on each end of the interbuilding circuit is the most effective method in lightning-prone areas, ensuring enhanced safety and reliability of the communication systems.