Ac repair , furnace motor was not running , needed a new 5 mfd capacitor, condenser had also blown the 20 amp breaker , tested compressor motor and had a reading to ground of 34 k ohms but the unit is still running , tested after it ran for 10 mins and no reading to ground , I believe compressor is in the early stages of failure , customer would like to change the compressor because the house is for sale