Multimeter to measure how the line is not leaking
Leakage circuit breaker set up to 30mA value for the safety trip, can think of such a high current, no matter you use a digital multimeter AC file, or resistance 10K file can be easily measured with a leakage said.
With electricity first try a digital stylus to measure the outside of the wire, where only show "N" for normal, where the data show how much voltage for the poor quality of the wire or has been aging. There may be leakage.
Open the multimeter AC 250V file, measuring fire zero should be 220V + - fire ground should be 220V + - zero ground also has a voltage, look at the home appliances open how much power can be measured to 5V to dozens of volts, this is the zero line diameter of the circuit impedance produced by the small, so that the zero line charged. If the zero ground shows a high voltage, indicating that the zero line wire diameter is small heat, not with the home appliances power, high-power appliances at home to stagger the use of time.
Turn off the main switch and switch, unplug all the plugs, including the indicator (not open easy to misjudge) open the pointer multimeter, with ohm 10K file test fire zero line pointer does not move for normal,
Then test the fire ground pointer does not move as normal,
The last measurement of zero ground pointer is not action for normal,
If the above measurements, the pointer is a little bit of movement, are proof of leakage, this phenomenon for the kitchen wall leakage so that the line joints in case of humidity there is a slight leakage, check the line when the kitchen circuit breaker is turned off first, measure whether the leakage.
Strictly speaking, measuring wire leakage should be used to shake the meter to be accurate, but within 30mA leakage, pointer multimeter 10k file can be measured, if the digital multimeter will be more sensitive.
