How: To Select Earthing Cable Size Best

$$S = \frac\sqrt10,000^2 \times 0.1143 = \frac\sqrt10,000,000143 = \frac3162143 \approx 22.1 \text mm^2$$

Follow these 5 key steps based on and BS 7671 (common international standards). For NEC (US), refer to Table 250.122. how to select earthing cable size

If you use a Copper earth cable with an Aluminum phase cable, the copper earth cable can be smaller in physical diameter than the aluminum phase cable, as copper is a better conductor. You must perform the Adiabatic Calculation (Section 4) to verify the size. $$S = \frac\sqrt10,000^2 \times 0