Using exact k what would the voltage drop be for a 400 foot, three phase 480 vol

Question

Using exact k what would the voltage drop be for a 400 foot, three phase 480 volts, 80 amps load using # 1/0 copper conductors? Using exact k what would the voltage drop be for a 400 foot, three phase 480 volts, 80 amps load using # 1/0 copper conductors? Using exact k what would the voltage drop be for a 400 foot, three phase 480 volts, 80 amps load using # 1/0 copper conductors? Using exact k what would the voltage drop be for a 400 foot, three phase 480 volts, 80 amps load using # 1/0 copper conductors?

Explanation / Answer

Given load current I=80A , L=400ft, three phase and #1/0 copper conductor.

Voltage drop VD = 1.732KIL / CM V

Here, K= 12.9 ohms-cmil/ft for copper conductor

CM= circular mil area of concuctor = 105600 cmil for #1/0 copper conductor

VD =1.732 * 12.9* 80*400 / 105600 = 6.771 V

Voltage drop = 6.771 V at load

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