I'm using a stepdown transformer to take an inverter output from 480 wye and stepping down to 208 delta on the utility side and then to a fused disconnect before making a supply side connection. Since the transformer doesn't have a neutral connection point on the 208 delta (primary side) we're not running a neutral between the transformer and the fused disconnect.
However I'm unclear if I need a neutral run from the fused disconnect to the supply side connection. I've run one on past projects just to be safe, and also to bond neutral to ground at this fused disconnect since we're connecting upstream from where the service N/G bond is made. But is this even necessary? Seems silly to run a neutral only to the fused disco, and then not run a neutral to the transformer.
However I'm unclear if I need a neutral run from the fused disconnect to the supply side connection. I've run one on past projects just to be safe, and also to bond neutral to ground at this fused disconnect since we're connecting upstream from where the service N/G bond is made. But is this even necessary? Seems silly to run a neutral only to the fused disco, and then not run a neutral to the transformer.