The project is purposive for underground cable fault detection which measures the fault in underground The project's purpose is to detect problems in subterranean cables using a Renesas microcontroller to calculate the distance in kilometers from the base station. Ohm's law serves as the primary premise guiding this deliberate endeavor. When a low DC voltage is provided to the feeder end, which is connected to the lines via a series resistor, current swings in proportion to the location of the cable problem