This document describes a proposed system for detecting the location of faults in underground cables using an Arduino microcontroller. It begins by discussing challenges with detecting faults in underground cables and describing existing methods like the A-frame technique. It then introduces the proposed system, which uses the Arduino microcontroller and sensors to measure resistance along the cable and identify changes indicating a fault. When a fault occurs, the location is determined based on the cable length and displayed on an LCD screen. The system is also meant to disconnect the faulty line and trigger an alarm to alert workers. In under 3 sentences, the document proposes and describes a new system using an Arduino microcontroller to more easily detect the precise location of faults in underground power cables.