Basic Electrical AC Calculations - Video 2, 2002
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Master the 2002 NEC
AC vs. DC, Single Phase & Three Phase Power, Single phase 120/240 Volt Power Systems, 3 Phase Systems: 480 & 480/277 Volt Grounded & Ungrounded; 240/120 Volt, 3 Phase Delta & 208/120 Volt, 3 Phase Wye. Three Phase Power Calculations, Voltage Drop, Power Factor, Motor Efficiency, Single Phase Transformers, Three Phase Transformers, Single Phase Neutral Current Hazards, Three Phase Wye Systems, Harmonics, References to Harmonics in the NEC.