When selecting your earth cable size, follow this hierarchy:
The most common method is the adiabatic equation, which assumes no heat is dissipated during the short fault duration: earth cable size
Alex's eyes widened with understanding. "So, using a thicker earth cable is a safety precaution?" When selecting your earth cable size, follow this
Calculate fault current at the point of installation. Step 2: Determine disconnection time of the protective device. Step 3: Apply the adiabatic equation (IEC 60364-5-54) to get minimum size. Step 4: Check against table method and mechanical strength requirements. Step 5: Select next standard size upward. When selecting your earth cable size