Short-circuit check: [ S_min = \frac\sqrt(5000)^2 \cdot 0.1143 \approx \frac1581143 \approx 11.1 \text mm^2 ] Selected 16 mm² > 11.1 mm² → OK.

[ I_b = \frac30000\sqrt3 \cdot 400 \cdot 0.85 \cdot 0.9 \approx 56.6 \text A ]

From IEC table for XLPE/Cu, 10 mm² → ~70 A. Select 10 mm².

Correction factors: k_t=1, k_g=1 → (I_t \ge 56.6) A.

Mechanical strength satisfied (≥1.5 mm²).

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How To Size Cable - Repack

Short-circuit check: [ S_min = \frac\sqrt(5000)^2 \cdot 0.1143 \approx \frac1581143 \approx 11.1 \text mm^2 ] Selected 16 mm² > 11.1 mm² → OK.

[ I_b = \frac30000\sqrt3 \cdot 400 \cdot 0.85 \cdot 0.9 \approx 56.6 \text A ] how to size cable

From IEC table for XLPE/Cu, 10 mm² → ~70 A. Select 10 mm². Short-circuit check: [ S_min = \frac\sqrt(5000)^2 \cdot 0

Correction factors: k_t=1, k_g=1 → (I_t \ge 56.6) A. how to size cable

Mechanical strength satisfied (≥1.5 mm²).