Evans, D.
(1981),
Calculated Operating Temperatures of Thermally Insulated Electric Cables., Technical Note (NIST TN), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/nbs.tn.1133
(Accessed October 10, 2025)
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Calculated Operating Temperatures of Thermally Insulated Electric Cables.
Published
Author(s)
D. D. Evans
Abstract
Steady-state operating temperatures of current-carrying electric cables buried axially in cylinders of thermal insulation were calculated. Combinations of six types of nonmetallic electric cable, two thermal insulation materials, five thermal insulation thicknesses and a range of currents both greater and less than the typical rated service currents for the cables were studied. These calculations show that thermally insulated electric cables carrying the rated current may exceed the rated operating temperature limit for common cable jacket materials.Citation
Technical Note (NIST TN) - 1133
Report Number
1133
NIST Pub Series
Pub Type
NIST Pubs
Download Paper
Keywords
electric cable, electrical fire, models, thermal insulation, wiring system
Citation
Issues
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Created January 1, 1981, Updated November 10, 2018