Question 1: howHow to convert 3phase+Neutral 208VAC supply to 1phase 120VAC? Can I tap off one (any) leg of the 3phase supply and use that to Neutral to get the 120VAC? Or do iI have to use all three phases and load each phase similarly to balance the load of the 120VAC equipment across the three phases?
Question 2: We want to step the voltage up from 3phase 208VAC to 3phase 800VAC and the Step up xmfrtransformer is wired delta, so we just send the 3 phases to the final load right? Or do we have to continue the neutral line to the final load somehow too?