1. The problem statement, all variables and given/known data In a wye connected circuit with a balanced UPF load, what is the phase displacement between the line voltages and current for an ABC and ACB phase sequence 2. Relevant equations n/a 3. The attempt at a solution My trouble is I can't find anything pertaining to the "syntax" of phase displacement. I can see that for the ABC sequence, the current will lag the voltage by 30 degrees. How would I go about annotating this? Is the phase displacement between Vab and Ia, for instance, +30 degrees because the voltage leads, -30 degrees because the current lags... does it even need a sign? Thanks for your time..