How To Calculate Cable Size

: Short-circuit withstand. ( k=115 ). ( S_min = \sqrt10000^2 \times 0.4/115 = \sqrt40\times 10^6/115 = 6324/115 = 55 mm^2 ). Required minimum 70 mm². Our 50 mm² fails. Therefore increase to 70 mm².

Suppose we want to calculate the cable size for a 20 A load current, 100 m cable length, and 230 V voltage, with a copper cable and a power factor of 0.8. how to calculate cable size

[ I_tab \ge \fracI_nk_total ] Where ( k_total ) = product of all correction factors. : Short-circuit withstand

The current density (J) depends on the insulation type, ambient temperature, and cable configuration. 100 m cable length

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