Electrical Cable Sizing Calculation [work] -

The Conductor’s Dilemma

exceeds the limit, choose a larger cable size and re-calculate. 5. Step 4: Short Circuit Temperature Rise electrical cable sizing calculation

[ I_0 \geq I_z ]

If (A_min >) selected size, increase cable. The Conductor’s Dilemma exceeds the limit, choose a

6. Step 5 & 6: Earth Fault Loop Impedance and Final Selection The Conductor’s Dilemma exceeds the limit

Other important standards: (UK), AS/NZS 3008 (Australia/New Zealand).