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Q3. A three-phase, 415 V, 4-wire power supply has the following unity power factor loads:

i) R-N: 24 kW

ii) S-N: 18 kW

iii) T-N: 12 kW

Calculate EACH of the following:

(a) The current in each load; (4)

(b) The current in the neutral conductor; (10)

(c) The phase angle of the current in the neutral conductor relative to the red phase voltage. (2)