Characteristics of Different Laying Methods of Power Cables Direct Burial Laying Advantages: Small investment, convenient construction, and good heat dissipation conditions. Disadvantages: Easy to be damaged by mechanical forces, chemical or electrochemical corrosion of the surrounding soil, termite and rat hazards, difficult to find faults and repair cables. Applicable environment: There are no obstacles underground. The soil does not contain severely corrosive media such as acid, alkali and salt. And the cable number is less.

What are the functions of cable outer sheath and inner sheath? What are the main properties of the insulation layer of electric cables? What regulations should be followed when selecting the cross-section of electric cables?

XLPE insulated cables and PVC insulated cables are basically the same in function, but there are obvious differences in performance, applicable environment etc.The insulation performance of XLPE insulated cables is better than that of PVC .