Test prep math question

[nickelec]

Having issues with this question
Calculate the short ckt current of a 100kva transformer 120/208 with an impedance of 7%

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[Dennis Alwon]

I am no expert but I believe you need a whole lot more info such as wire size , distance, conduit type, al vs cu, etc

 

[david luchini]

100000/208/1.732/0.07=3954A

 

[jumper]

Here is link showing how to do it.

http://www.cooperindustries.com/con...rary/BUS_Ele_Tech_Lib_Electrical_Formulas.pdf

 

[Dennis Alwon]

100000/208/1.732/0.07=3954A

Dopey me - I was thinking of the aic from the trany...duh...