01
The power was already waiting in the cellar. Twice over.
Two spare 200 A, 480 V fused switches on the building's main switchboard are allocated to the space. The brand's standard of 400 A at 208 V works out to about 173 A at 480 V, so one switch covers the whole requirement and the second is headroom. Reading the switchboard labels in the cellar is what turned a line in a leasing email into a number the design team could use.
What we recommended
Two 75 kVA step-down transformers, one on each switch, and a 480 V feeder up from the cellar. Agree where the transformers sit early, before the layout is fixed.