Which statement about metallic conduits is true regarding lightning protection?

Metallic conduits play a crucial role in lightning protection systems by providing a pathway for the dissipation of electrical energy. When a lightning strike occurs, it is essential that these conduits are properly bonded to ensure an effective transfer of electrical energy to the ground. Bonding at both ends creates a low-resistance path that can effectively channel the lightning energy safely away from buildings and structures.

This bonding is critical because it helps prevent hazardous voltage differences from developing along the length of the conduit, which could otherwise pose a risk of shock or fire. By bonding metallic conduits, the integrity of the lightning protection system is maintained, ensuring that the system functions as intended during a lightning event. Proper bonding also supports compliance with safety standards and regulations pertaining to lightning protection.

The other choices do not accurately describe the requirements or characteristics of metallic conduits in the context of lightning protection. For example, while conduits may sometimes be insulated in specific applications, they are generally not always insulated. Additionally, bonding is a necessary practice, not optional, and conduits typically require connectors to maintain the integrity of the system.