What system component can be affected by lightning strikes if not properly grounded?

Lightning strikes can cause significant damage to various systems if they are not properly grounded, primarily affecting electrical conductors. When lightning hits an ungrounded electrical system, it can introduce extremely high voltage surges that can overwhelm and destroy sensitive electronic components and wiring. Proper grounding provides a path for the electrical discharge to safely reach the ground, thereby protecting the conductors and connected devices from damage.

While renewable energy batteries may also be affected due to their connection to electrical systems, they are typically integrated with protective devices designed to handle surges. Non-electric heating systems and mechanical gear systems, on the other hand, do not directly rely on electricity and would not be impacted in the same way by a lightning strike. Grounding is critical primarily for components related to electrical systems, making electrical conductors the most vulnerable to lightning damage when not properly grounded.