Which of the following is a characteristic of a conductor with a concentric stranding type?

A conductor with a concentric stranding type is designed in such a way that the strands of conductor material are arranged concentrically around a central core. This configuration results in a larger outside diameter compared to other types of conductors, which often have strands arranged in parallel or in a more simple layering.

The larger outside diameter is significant because it usually means that the conductor can effectively reduce eddy current losses and improve overall conductivity due to the way the strands are positioned. This design also allows for better distribution of electrical and thermal stresses, enhancing the performance of the conductor in various applications.

Other options may describe certain features associated with conductors but do not specifically apply to the characteristic of concentric stranding that involves its diameter. For instance, flexibility relates more to the total number of strands and their arrangement—rather than their concentric positioning—while insulation requirements depend on various other factors than just the type of stranding.