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Adiabatic Cable Check
Check a protective conductor (CPC) against the BS 7671 adiabatic equation S = root(I squared t) over k.
The Ensign ToolboxAdiabatic Cable CheckCheck a protective conductor (CPC) against the BS 7671 adiabatic equation S = root(I squared t) over k.
Fault
A
Earth-fault current at the fault point, from the fault-loop study
s
Device operating time at that current; 0.4 s = TN final ≤ 32 A. Valid ≤ 5 s
Protective conductor (CPC)
mm²
Cross-sectional area actually installed — checked against the required minimum
Selects the BS 7671 k table (54.2 separate vs 54.3 incorporated)
Enter the fault current, disconnection time and installed CPC csa