Technical brochure
TB 880 WG B1.56

Power Cable Rating Examples for Calculation Tool Verification

The International Electrotechnical Commission (IEC) publishes standards, which use formulae to calculate the current rating of a cable system. The current rating (often named “ampacity”) is the current which a cable can carry over a given time, such that the conductor attains – but does not exceed – the maximum operating temperature.

To read this article subscribe to ELECTRA. Single edition, annual options and CIGRE membership are available. Access to all editions is free for CIGRE members.

Already have an account? Sign in

Subscribe now


Insulated cables

This Technical Brochure has been created by a Working Group from the CIGRE Insulated cables Study Committee which is one of CIGRE's 16 domains of work.
The scope of SC B1 covers the whole Life Cycle of AC and DC Insulated cables for Land and Submarine Power Transmission, which means theory, design, applications, manufacture, installation, testing, operation, maintenance, upgrading and uprating, diagnostics techniques.

Learn more
Top of page