Which of the following is true when installing grounding conductors used for lightning protection?

When installing grounding conductors for lightning protection, avoiding sharp bends is crucial because sharp bends can increase the resistance along the conductor and potentially hinder its ability to effectively dissipate electrical energy. Grounding conductors need to provide a low-resistance path to ground to ensure that any lightning strike energy can be safely diverted into the earth. Smooth curves or gradual bends are recommended to maintain an optimal electrical connection and ensure that the system functions properly.

Using non-insulated wire, while sometimes a practice in specific grounding contexts, does not directly relate to the installation's physical bending requirements. Routing wires in precise right-angle bends is not ideal either, as it can lead to sharp angles that might compromise performance. Additionally, the idea of avoiding common grounds typically applies to certain situations to prevent ground loops, but it does not pertain directly to the physical installation of grounding conductors for lightning protection. Hence, avoiding sharp bends stands out as the correct practice in this context to optimize performance and safety in grounding systems.