Cable Size Calculator __hot__ -

(dominated by voltage drop, not ampacity).

Ensures cable can withstand fault current until protection operates. Adiabatic equation (IEC): [ S = \frac\sqrtI_sc^2 \times tk ] Where: cable size calculator

Increase to 16 mm² Cu PVC: rating ~85 A, voltage drop ~2.9 mV/A/m. ( V_d = \frac2 \times 60 \times 30 \times 2.91000 = 10.44 , V ) → 4.5% → still slightly above 3%. (dominated by voltage drop, not ampacity)

To size a cable, you need: