Installing single-conductor cables, especially for high-voltage and high-current applications, presents unique challenges compared to multi-conductor cables. The primary difficulties arise from managing the physical and electrical properties of the cables.

1. Magnetic Fields and Circulating Currents: When single-conductor cables carry alternating current (AC), they generate a strong magnetic field. If not managed properly, this can induce circulating currents in nearby metallic structures like conduits, cable trays, or even the cable's own metallic sheath. These induced currents can cause excessive heating, leading to energy loss and potential cable damage.

2. Twisting and Kinking: Unlike multi-conductor cables that are twisted together by the manufacturer, single conductors have no inherent twist. During installation, if they are not properly handled and pulled, they can twist and kink, which can damage the cable's insulation and core.

3. Cable Spacing and Configuration: To minimize the effects of magnetic fields and ensure proper heat dissipation, single conductors must be installed with precise spacing and in specific arrangements (e.g., trefoil or flat formation). This requires specialized tools and careful planning.