Which property of a conductor is increased with a thicker insulation?

The voltage withstand capability of a conductor is enhanced with thicker insulation. Thicker insulation serves as a barrier, providing greater resistance to electrical stress. This increased thickness helps to prevent electrical breakdown and ensures that the conductor can handle higher voltages without arcing or failing. The insulation's role is crucial in maintaining safety and performance in electrical systems, especially in environments where high voltages are present.

While other properties like thermal resistance and mechanical strength may also be influenced by insulation thickness, they do not directly correlate in the same way as voltage withstand capability. For example, thicker insulation may improve thermal insulation to some degree but its primary role is in electrical insulation, ensuring that the conductor operates safely at elevated voltages. Thus, the correct response highlights the specific relationship between insulation thickness and its capacity to endure voltage without breakdown.