# Question Solved1 AnswerAvailable SC: 500 MVA X/R: 6 1. Calculate the symmetrical 3ph fault current at point F1 1MVA, 13.8kV/480V Z = 5.75% 3 - 175mm2 (350kcmil) Cu in steel conduit, 30.5m F1 open line Each feeder supplies mixed lighting and motors with total combined motor of 250hp

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Transcribed Image Text: Available SC: 500 MVA X/R: 6 1. Calculate the symmetrical 3ph fault current at point F1 1MVA, 13.8kV/480V Z = 5.75% 3 - 175mm2 (350kcmil) Cu in steel conduit, 30.5m F1 open line Each feeder supplies mixed lighting and motors with total combined motor of 250hp
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Transcribed Image Text: Available SC: 500 MVA X/R: 6 1. Calculate the symmetrical 3ph fault current at point F1 1MVA, 13.8kV/480V Z = 5.75% 3 - 175mm2 (350kcmil) Cu in steel conduit, 30.5m F1 open line Each feeder supplies mixed lighting and motors with total combined motor of 250hp
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Given z=5.75%for a three phase fault.{:[I_(f)=(1)/(2)=(1)/(5.75 xx100)=17.39pu] ... See the full answer