geraldkinen
Member
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I did this calculation, but I'm not shure that I got it righ? Would somebody check my answer? And If I got it wrong, let me know which formula I should use. Thanks!
The Minimum 75 degrees C. transformer secondary conductor not over 7.5 m long for a 480 volt primary to 208 volt secondary transformer suplied by a 100 ampere primary overcurrent device is: A. 6 awg xhhw al. B. 4 awg rhw al. C. 3 awg thw al. or D. 2 awg use al.
Answer I came up with is D. 2awg use al. using IS=EPXIP/ES
I did this calculation, but I'm not shure that I got it righ? Would somebody check my answer? And If I got it wrong, let me know which formula I should use. Thanks!
The Minimum 75 degrees C. transformer secondary conductor not over 7.5 m long for a 480 volt primary to 208 volt secondary transformer suplied by a 100 ampere primary overcurrent device is: A. 6 awg xhhw al. B. 4 awg rhw al. C. 3 awg thw al. or D. 2 awg use al.
Answer I came up with is D. 2awg use al. using IS=EPXIP/ES
