Have a project where the contractor did not provide a neutral conductor for a 480V,3phase service. The service conductors leave an outdoor utility transformer and enter a bussed wireway inside the building. The service conductors feed multiple apartment units via bus taps. There are multiple services in the room which are fed 480V,3p,4W off the same utility transformer.
The 3phase bussed wireway is used to tap 2 phases at a time to feed single phase apartment units.
Without that neutral wont the phase conductors back to the utility transformer overheat since there will be a large unbalanced load with nowhere to go?
I have looked in the code but cannot find any help there about the neutral being required.
The 3phase bussed wireway is used to tap 2 phases at a time to feed single phase apartment units.
Without that neutral wont the phase conductors back to the utility transformer overheat since there will be a large unbalanced load with nowhere to go?
I have looked in the code but cannot find any help there about the neutral being required.