Why radial distribution system used for short distance ?
Because of following disadvantages radial distribution system is not used for long distance:
Since there is only one feeder to DTC feed at one point so, 1) There is no reliability to maintain supply at the time of fault on incoming feeder. 2) There is no reliability to maintain supply at the time of maintenance of incoming feeder. 3) If the system is used for long distance then it takes more time for fault finding & repairing Hence radial distribution system is used for short distance.