01
Every breaker slot was filled. About twenty of them were spares.
The unit has its own 400 A service at 208Y/120 V three-phase, feeding two 2019 Siemens panels. Through the deadfront both panels looked full. The directories showed roughly twenty spare ways in the main panel and more in the second, and the permit set put the engineered shell demand at about 145 A of the 400 A available.
What we recommended
Have the electrical engineer run a load schedule against the 400 A service and plan the fit-out as a reuse-and-reterminate job, not a service upgrade.