The specific use of the clamp meter
If the current is too small, the measured line can be wrapped in 1 or 2 rings on the clamp. The measured value is 2 times and 3 times of the actual current...And most important: can only measure the AC current clamp meter.
Clamp a line, the measured value is the current of this line, if there is a line can not be clamped, you can clamp two at the same time.
Check the quality of motor using the multimeter and clamp meter plus experience method is completely can detect the quality of the motor. The following describes several detection methods (for reference only): 1, DC resistance method: use multimeter resistors (three-phase)
