1. The problem statement, all variables and given/known data Three loads ZA = 10∠0° Ω; ZB = 15∠-30° Ω and ZC = 20∠45° Ω are connected in star across a balanced, 3 phase, 400 V, RYB supply. Determine (a) line currents (b) Phase Voltages (c) Neutral shift voltage, VON 2. Relevant equations 3. The attempt at a solution My query is that in question I am taking 400 as rms phase voltage of supply but I saw the solution and they have done by considering that voltage as line to line rms voltage, why that is so? Later we should also multiply voltage by√2 but are we required to keep the solution in rms only?