Which type of conductor is required for bonding reinforcing rods and wire mesh in concrete to minimize stray voltages?

The requirement for bonding reinforcing rods and wire mesh in concrete primarily revolves around the need to minimize stray voltages that could pose safety hazards. Copper conductors are preferred for this application due to their excellent electrical conductivity, durability, and resistance to corrosion. Copper's superior conductivity ensures that any stray voltages are effectively redirected, thereby maintaining safety standards and reducing the risk of electrical shock.

Moreover, the mechanical properties of copper make it a reliable choice for bonding applications in construction, as it can withstand environmental exposure and maintain a strong physical connection. This ensures long-term performance and integrity of the grounding system.

While aluminum conductors are also used in some applications, they have higher resistance compared to copper and are more susceptible to oxidation, which can compromise their conductivity over time. Steel, although a good conductor, does not offer the same level of corrosion resistance as copper, making it less suitable for permanent installations in concrete. Plastic conduit is not a conductor and would not serve the intended purpose of electrical bonding. Thus, copper is the most effective and reliable choice for this task.