An investigation of the relationship between temperature and movement of cables in ducts

MANY complex thermal and mechanical influences govern the relationship between electrical loading and the movement of cable in an underground conduit line. It is probable therefore that a knowledge of the relationship will come only through the analysis of many careful observations of the movement of cable in conduits of different types and in different locations and also under the influence of electrical loadings of various magnitudes and durations. It is apparent that engineers now appreciate the importance of a knowledge of the factors that influence cable movement as well as of the control of these factors as a requisite for higher loading of cables that operate under the load factors normally encountered.