In electrical power systems, transmission and distribution of electricity are done either through overhead lines or underground cables. Both methods have their own benefits and limitations, and every engineering or diploma student should clearly understand these differences for exams and practical work. This post explains the advantages and disadvantages of overhead lines and underground cables, with simple points and a comparison table. A visual comparison showing how overhead lines and underground cables are structured and installed for power distribution. 📌 What are Overhead Lines? Overhead lines are conductors (wires) supported on poles or towers placed above the ground. These lines are the most common and economical way to transmit and distribute electrical energy over long distances. Key Points: Easy to install and maintain. Visible and accessible for repairs. Common in rural and urban areas. 📌 Advantages of Overhead Lines ✅ 1️⃣ Low initial cost: Overhead lines are cheaper to i...