Cable lines in ducts / 21.10.2023

Do cable factories know everything about cables?

In the cable catalogs of leading manufacturers of power cables there is a system of correction coefficients for selecting the core cross-section. According to this system, laying cables in pipes reduces the long-term permissible current (current capacity) of the cable line, and the corresponding correction factor is 0.9. I must say that this is incorrect.

Cable lines in ducts / 01.06.2023

Cable pipes from plastic garbage

In recent years, the laying of high-voltage cable lines is often carried out in polymer pipes. Such pipes are laid either at the bottom of the trench or are dragged into the ground into channels prepared by horizontal directional drilling (HDD). Laying of cable lines in pipes provides mechanical protection of cables, minimizes open excavation