Neutal conductor on a 208/120 wye systemfeeding 120Vac loads

[briankrogers]

On a 4-wire, 3-phase 208/120 wye system, if I run a 5 conductor cable from a 3-pole breaker to feed three separate 120Vac circuits, is the neutral considered a current carrying conductor if the loads are linear? Technically, there are 3 separate 120VAc circuits, each carrying neutral currents but if fed from a 3-pole breaker, is the "shared" neutral considered only to carry the "unbalance" for all three phases?

 

[Smart $]

On a 4-wire, 3-phase 208/120 wye system, if I run a 5 conductor cable from a 3-pole breaker to feed three separate 120Vac circuits, is the neutral considered a current carrying conductor if the loads are linear? Technically, there are 3 separate 120VAc circuits, each carrying neutral currents but if fed from a 3-pole breaker, is the "shared" neutral considered only to carry the "unbalance" for all three phases?

No and yes, respectively.