[ I_z = I_ref \times C_a \times C_g \times C_i \times C_s ] where ( I_ref ) is the base rating from standard tables (e.g., IEC 60364-5-52 Table B.52.1–B.52.13).
[ S_\textmin = \frac\sqrtI_sc^2 \cdot tk ]
[ I_z = I_ref \times C_a \times C_g \times C_i \times C_s ] where ( I_ref ) is the base rating from standard tables (e.g., IEC 60364-5-52 Table B.52.1–B.52.13).
[ S_\textmin = \frac\sqrtI_sc^2 \cdot tk ]