How to use a digital multimeter to test whether the line is energized
How to use a digital multimeter to measure whether the line is energized or short-circuited, the method is as follows:
1. Is the line smooth?
Hit the resistance gear or the diode buzzer gear, and measure between the two lines of the line. If the value shows close to 0 ohms or the buzzer sounds, it means that the line is unblocked; if the value shows 1 or the buzzer does not sound, it means the line exists. circuit breaker.
2. Whether the line is short-circuited
Hit the resistance gear or the diode buzzer gear, and measure between the two lines of the line. If the value shows close to 0 ohms or the buzzer sounds, it means that there is a short circuit between the two lines of the line; if the value shows 1 or the buzzer sounds If there is no sound, it means that the two lines of the line are normal and there is no short circuit.
