Example tool IEC 60364-5-54 543.1.2

Protective Conductor Sizing — adiabatic equation

Minimum cross-section of a protective conductor from the prospective fault current and the disconnection time, by the adiabatic equation of IEC 60364-5-54:2011, 543.1.2. Valid only for disconnection times up to 5 s; longer times require the non-adiabatic method of IEC 60949.
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Input
r.m.s. value through the protective device, per IEC 60909-0.
Operating time of the protective device. Above 5 s the equation does not apply.
k from IEC 60364-5-54 Table A.54.4.
Every field can be overridden by hand — no value is locked.
Result
PRO — batch check and full report

The single check on the FREE tab is complete and unrestricted. PRO adds a batch run over a circuit schedule and the .docx report with the derivation.

Glossary & abbreviations
Built-in validation tests
#CaseQuantityExpectedComputedStatus