How can we find fault in Low Voltage Cables ?

Many tools available in market. Are you looking best way or cheapest way?

1) Impulse Reflection Method TDR (These are low resistive faults and can be 

determination of cable end, cable cut, joint 

location with impedance change 

2) Multiple Impulse Method SIM/MIM 

3) Impulse Current Method ICM 

4) Decay Method 

5) Burn Down Techniques 

6) Bridge Measurement