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This paper presents an approach for the fault classification in transmission line using multi-class support vector machine (SVM). This approach uses information obtained from the wavelet decomposition of post fault current signals as input to SVM for classification of various faults that may occur in transmission line. Using MATLAB Simulink, dataset has been generated with different types of fault and system variables, which include fault resistance, fault distance and fault inception angle. The proposed method has been extensively tested on a 240-kV, 200-km transmission line under variety of fault conditions. The results indicate that the proposed technique is accurate and robust for a variation in system parameter and fault conditions.