Reasonable cable laying can reduce cable damage caused by mechanical damage. General precautions are as follows: 1. Cables should be stored indoors without heavy objects;

2. In the process of loading, unloading and transportation, the cable should avoid the impact and extrusion of foreign objects. Because the cable reel is heavy, cranes, springboard and other handling tools are needed.

3 Pay-off should start from the outer ring of the cable after unpacking, and never from the inner ring to reduce the torsion caused by too small curvature radius during cable laying;

For the bending shape formed during cable laying, local stress methods such as hammering and torsion cannot be adopted, and the cable shape should be slowly relieved through the cooperation of many people;

5. The radius of curvature of the bent part of the cable should not be less than 10 times of the cable diameter;

6 The supporting and stressed part of the cable should be in smooth contact with the external contact surface, and there should be no protrusions and blades on the contact surface.