How to calculate size of a cable for 11kV or 33kV line

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There are three factors affecting the size of a cable Load Length & Voltage drop Short Circuit Current of the system Now, we can consider these four points one by one and choose a cable which complies all these requirements. Load – The load of circuit is available in kW or watts. For example if you are calculating the size of cable for a 1 kW single phase pump. Load on the circuit is 1 kW. Now, calculate the current that will be running in the circuit due to 1 kW load of the pump. P=Volt X Current X Cos […]