Use clamp ammeters, wire requirements will be placed in the window center. Why is this?
Current clamp meter only measuring one conductor, the measured wire clamp should be placed in the center of the window, can not be multiphase wires into the measurement window.
The measured voltage clamp meter shall not exceed the values marked on the ground, otherwise easy to cause the accident, or cause the risk of electric shock.
In the use of clamp ammeters before should carefully read the manual to find out AC or AC / DC clamp meter.
