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  • If in 3 phases, the load impedance is not same either in phase or magnitude or both, then that load can be stated as unbalanced.
  • In case 3 unequal loads which are linked to the formation of delta and also are linked across 3 phase supplies current in all those loads, they will not have equivalent phase or magnitude.
  • This is the reason for line currents and 3 phase currents to be unbalanced.