Which of the following does NOT determine the type of insulation used for cables?

The type of insulation used for cables is primarily influenced by several factors critical for ensuring safety and performance. Current load is essential as it impacts the thermal performance and heat dissipation of the insulation material. The type of coverage, which refers to how the cable is protected from environmental factors and physical abrasion, also plays a crucial role in selecting an appropriate insulation type. Similarly, operating voltage is a determining factor because different insulating materials have various voltage ratings that affect their effectiveness and safety in high or low voltage environments.

In contrast, the color of insulation does not influence its functional properties or suitability for particular applications. Although color can have aesthetic significance or indicate specific uses or classifications in some contexts, it does not determine the electrical or thermal performance characteristics of the insulation. Therefore, the correct answer reflects that the color of insulation is not a critical factor in the selection process for cable insulation types.