In the electrical transmission sector, Cable selection plays a crucial role in ensuring stable and efficient power supply. Among the many options available, AAC cables (All Aluminium Conductor) and ACSR (Aluminium Conductor Steel Reinforced) are widely used. These two types of cables have unique characteristics that make them suitable for specific needs. This article examines their differences in detail, their advantages, their disadvantages and the criteria to consider when choosing the ideal cable for your project.