What are the benefits of multi-core vs. single-core power cables?

Multi-core cables are more compact and easier to install for standard three-phase systems. However, single-core cables are often used in high-current industrial applications because they are easier to handle in large cross-sections and allow for better heat dissipation. Note: Single-core armored cables must use Aluminum Wire Armor (AWA) instead of steel to prevent electromagnetic heating (eddy currents).