For electrical panels / systems with three phase electricity (red, yellow, blue) ~220/127. When using line to line we get 220 V is this considered single phase system or three phase?
I know three phase devices such as motors use all three phases together, this is clearly three phase and we use three phase formulas for calculations, but what about when using three phase system line to line? What formulas do we use for apparent power calculations?
Also if a circuit breaker is 20 A for each phase, and I am using line to line wiring, does this makes my maximum amps usage 40 A or still 20 A?