The clamp-on tester measures the complete resistance of the path (loop) that the signal is taking. All elements of the loop are measured in series. The method assumes that only the resistance of the ground electrode under test contributes significantly. The faults in any Electrical System are unavoidable. Earthing plays an important role in Generation, Transmission & Distribution for safe and proper operation of any Electrical Installation is equipped with long jaw suitable for Grounding. We have various types of instrument like Clamp Clamp - On Earth | Ground Resistance & Leakage Current | Ground Resistance Tester | Ground Resistance and Leakage tester