How to detect where cable that has insulator cut or damage apart of using meter ?

by swapping with other cable

when the area voltage is low, in order to electricfy such aproblem without a meter

just get a changing cable and test terminal by terminal untill you get the required voltage

Instead of meter we can use the detector

By using insulation tester you can detect the cable if its damage or still good 

For meter, if cable insulator cut or damage voltage drope of that area is maximum, so when i check that area voltage is low, and i detect that damage area.