[ I_b \leq I_n \leq I_z ] [ I_z = \fracI_nC_a \cdot C_g \cdot C_i \cdot C_c ]
[ I_0 \geq I_z ] [ \Delta U = \sqrt3 \cdot I_b \cdot L \cdot (R\cos\phi + X\sin\phi) \quad \text(3-phase) ] electrical cable sizing calculation
[ \Delta U_phase-to-phase \leq \Delta U_max \quad (\texte.g., 3% \text of U_L) ] [ I_b \leq I_n \leq I_z ] [
[ A_min = \fracI_sc \cdot \sqrttk ]
If voltage drop exceeds limit, increase cable size. Minimum cross-section for short-circuit: electrical cable sizing calculation