ECN Forum Forums Code Related Discussion Canadian Electrical Code Topics do I need a neutral conductor?

I want to extend a feeder from building A to building B.
Building A has a 600/347V Y 3 phase service.
I want to bring 600V 3 wire to the second building and feed a 600V- 120/208V transformer and establish a neutral at the new service. I do not need 347V there.
Is a neutral required in the feeder?