[ I_\textmin = \fracI_\textloadk_1 \times k_2 \times k_3 \dots ]
Load = 24.5 A, ambient 40°C (k₁=0.87), grouping 4 cables (k₂=0.70) [ I_\textmin = \frac24.50.87 \times 0.70 = \frac24.50.609 \approx 40.2 A ] → Choose cable rated ≥40.2 A from tables. Step 3 – Select Cable Size from Current Rating Table Copper, PVC insulated, 30°C ambient (typical IEC table excerpt): electrical cable size calculations
Common factors: