Medium Voltage Cable Sizing Calculator -
At 1.5m (deeper = hotter), factor: 0.96.
Mark: “So we need a cable with base rating of 201A / 0.664 = 303A minimum.” medium voltage cable sizing calculator
Per ICEA P-32-382, for 90°C cable in 35°C soil (base rating is 25°C soil): ( k_{temp} = \sqrt{\frac{90 - 35}{90 - 25}} = \sqrt{\frac{55}{65}} = \sqrt{0.846} \approx 0.92 ) Result: The cable can only carry 92% of its base rating. At 1.5m (deeper = hotter)
(ignored for continuous max case—safety first). medium voltage cable sizing calculator

