Basic Engineering Circuit Analysis 11th Edition by David Irwin ,Robert Nelms

Exercise 30

For the balanced wye-wye system described in Learning Assessment E11.3, determine the real and reactive power and the complex power at both the source and the load.
Learning Assessment E11.3
A 480-V rms line feeds two balanced three-phase loads. If the two loads are rated as follows,
Load 1: 5 kVA at 0.8 pf lagging
Load 2: 10 kVA at 0.9 pf lagging
determine the magnitude of the line current from the 480-V rms source.