What setting should I turn on when using a multimeter to check for leakage?
1. First disconnect the main isolating switch of the power incoming line and turn off all the user's electrical loads, such as unplugging the refrigerator, turning off the water pump switch, etc.
2. Place the digital multimeter on the 200M ohm range, place one test lead on one of the two outlet wires on the load side, and touch the other test lead to the wall. It is best to touch the ground wire or a temporary Ground wire. After the number displayed on the multimeter stabilizes, what is read is the insulation resistance value of the main line. If the insulation resistance value is less than 0.5 megohms, then there is a problem with the main line. If the insulation resistance is above 0.5 megohms, then it can be ruled out that there is a problem with the main line. Use the same method to measure the other wire and check the value to see if there is a problem with the main line.
3. Check the insulation resistance value of the branch circuit and each electrical appliance, and use the same method to detect them one by one until the fault point is found.
How to check leakage with a multimeter:
1. First disconnect the main isolating switch of the user's power incoming line, and turn off all the user's electrical loads, such as unplugging the refrigerator, turning off the water pump switch, etc.
2. Place the digital multimeter on the 200M ohm range, place one test lead on one of the two outlet wires on the load side, and touch the other test lead to the wall, preferably to the ground wire or a temporary Ground wire. Wait for the multimeter
After the displayed number is stable, what is read is the insulation resistance value of the main line. If the insulation resistance value is less than 0.5 megohms, then there is a problem with the main line. If the insulation resistance is above 0.5 megohms, then the main line can be ruled out. Something went wrong. Use the same method to measure the other wire and check the value to see if there is a problem with the main line.
3. Check the insulation resistance values of the branch circuit and each electrical appliance, and use the same method to detect them one by one until the fault point is found.
