Is it possible to measure the break point of sheathed wires with a clamp multimeter?
Static measurement is possible, but dynamic measurement is not.
The so-called static refers to measurement when both ends of the cable are removed and no power is supplied. At this time, the clamp meter is used as an ordinary multimeter. The measurement method is: take one of the broken wires of the three-core cable as an example. Set the clamp meter to the diode level or ohm level. The ohm level should be set to zero. Use your hands to bend the cable back and forth from one end of the cable to the other. Search and monitor whether the pointer of the multimeter or the value swings or not. When it is bent to a certain place, the value of the multimeter changes, indicating that the breakpoint is near the bend. Use a paper knife to cut the cable sheath and try with your hands. Pull and see, usually the broken place will come out as soon as you pull. This is a method to find if the cable is broken at one point or the breakpoints are very close to each other.
If there is more than one breakpoint or the breakpoints are far apart, it is necessary to cut the cable sheath into sections and gradually reduce the scope of the fault until the breakpoint is found.
The so-called dynamic is when the power is on, because one line is broken, and there is no current without a loop. Without a current clamp meter, there is no use. If you energize the cable, connect it to the electrical appliance, and just use a clamp meter to clamp the wire to measure it, and then use the method of bending the wire, it seems feasible on the surface, but it is actually very unsafe. If the electrical appliance is powerful, If the wire is suddenly connected while bending, it may easily cause sparks or even the outer skin to catch fire. If it collides with the other two wires, there is a great safety hazard. This detection method should be used with caution.
