Where:
Looking at a standard Copper/PVC table, a 4 mm² cable has a rating of roughly 32 Amps. Since $32 > 28.3$, 4 mm² is selected. electrical cable size calculation
Where:
The voltage drop should typically not exceed 3% for lighting circuits or 5% for power circuits. If the calculated drop is too high, you must select the next larger cable size. Where: Looking at a standard Copper/PVC table, a
Formula (single-phase): Formula (3-phase): Vd = √3 × I × L × (R cosφ + X sinφ) electrical cable size calculation