Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

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

Keywords

electric cable, electrical fire, models, thermal insulation, wiring system

Citation

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 June 23, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created January 1, 1981, Updated November 10, 2018