What is the primary function of surge suppression devices in a lightning protection system?

Surge suppression devices play a crucial role in lightning protection systems by diverting unwanted electrical currents that can occur during a lightning strike or a surge event. When lightning strikes or when there are sudden changes in electrical load, these surges can create high-voltage spikes that could damage electrical systems and equipment within a structure.

The primary function of surge suppressors is to detect these voltage spikes and redirect the excess energy away from sensitive electronics and wiring, thereby preventing damage. This is essential for preserving the integrity of a building’s electrical system and ensuring that any critical electronic devices, such as computers and communication systems, remain operational and undamaged.

The other choices involve functions that do not accurately represent the role of surge suppression devices. For example, visually indicating a lightning strike or repelling lightning does not align with how surge suppression works—it doesn't prevent the lightning itself but rather addresses the consequences of electrical disturbances. Enhancing communication systems is not a primary function of surge suppression devices either, as their main purpose is protection against surges rather than enhancement of functionality.