... cable trench or direct in ground,able to bear external mechanical forces,able to bear large pulling 0.6/1kV ... trench or direct in ground, able to bear external mechanical forces, but unable to bear large pulling forceYJV23 YJLV23Copper/Aluminium conductor ... cable trench or direct in ground, able to bear external mechanical forces, able to bear large pulling forceYJV33 YJLV33Copper/Aluminium conductor, ...