PE Electrical Power
PE Electrical and Computer: Power
Transmission DistributionEnglish
Exam overviewPractice session
A 480 V three-phase service must NOT exceed 5% total voltage drop per NEC Informational Note (215.2(A)(1)). For a 200 ft feeder with 120 A current and pf = 0.9 lagging, the maximum allowed voltage drop is:
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