How do you calculate the Neutral Current in a 4Wire 3Phase 277Vac circuit.
For example, 15 parking lot pole lamps @ 400Watts each and pf of 0.88 will be powered from a 3phase 277Vac Lighting Panel.
I believe the total current would 6000 / 277 * 0.88 = 25Amps. Each phase wouild be balanced to carrier less current than the total current, say 5 lamps per phase for approximately 8.2Amps per phase.
But the Neutral should be sizes (wire size) to carry 25Amps.
Is this thought process correct?
FYI, each lamp is rated at 1.7Amps continuous.
For example, 15 parking lot pole lamps @ 400Watts each and pf of 0.88 will be powered from a 3phase 277Vac Lighting Panel.
I believe the total current would 6000 / 277 * 0.88 = 25Amps. Each phase wouild be balanced to carrier less current than the total current, say 5 lamps per phase for approximately 8.2Amps per phase.
But the Neutral should be sizes (wire size) to carry 25Amps.
Is this thought process correct?
FYI, each lamp is rated at 1.7Amps continuous.