Grounded Conductor Sizing for a 300A Wye 4-Wire 3-Phase System - Neutral Current Calculation.
Diagram showing grounded conductor sizing for a 300A wye 4-wire 3-phase system, illustrating the calculation of neutral current using the formula I = √(A² + B²) - (AB), with a note that 70% reduction of unbalanced load over 200A does not apply.