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How earth pit resistance is tested, problems faced while testing and solution to those problems are described in this video and we know that for every 6months earth resistance should be measured, technicians and engineers are getting errors in earth tester due to lack of knowledge of working principles and precautions to be taken. Any leakage current flowing in earth or water pipes or electrical cables can cause this errors in earth resistance testing. Alway test earth pit by disconnecting all connection from its earthing system.