Title :
Heating of cables in a Duct bank
Author_Institution :
Philadelphia Electric Company, Philadelphia, Pa.
Abstract :
IN THE calculation of the temperatures attained by underground cable systems installed in duct banks, it has been customary to base such calculations upon a set of experimentally determined thermal resistances commonly known as the “National Electric Light Association Duct Heating Constants,” by which the temperature rise above the ambient earth temperature of cables located in the duct bank may be calculated under stated conditions of duct occupancy.
Keywords :
Cable shielding; Ducts; Earth; Equations; Heating; Isothermal processes; Thermal resistance;
Journal_Title :
Electrical Engineering
DOI :
10.1109/EE.1949.6432500
