Is applicable to the conditions of steady-state operation of cables at all alternating voltages, and direct voltages up to 5 kV, buried directly in the ground, in ducts, troughs or in steel pipes, both with and without partial drying-out of the soil, as well as cables in air.This section concerns reference operatings and selection of cable type.This consolidated version consists of the first edition (1995) and its amendment 1 (1999). Therefore, no need to order amendment inaddition to this publication.