Aren’t the transformers the big white cabinets?
No, transformers are typically painted green (?to blend in), like the big green box in IMG_7693 in the post just beneath yours.
The left side (in this picture) is a cabinet area where connections from the high voltage are made, typically a switch, and the low voltage connections.
To the right is the transformer core and coils, submerged in cooling oil.
Surprised in the Vegas heat this transformer doesn't have cooling fins, but this is "only" 12 stalls.
The transformer converts the high voltage input (NV energy is typically 12,000 volts or 25,000 volts) to the 277 volts (hot to ground) / 480 volts (hot to another phase hot) "low" voltage.
The low voltage is metered, probably in the switchgear cabinets (those in IMG_7695).
The switchgear cabinets will also have circuit breakers for each of the power conversion cabinets and a few small ones for lighting and communications equipment.
From the switchgear, power is fed to the power conversion cabinets (aka V3 cabinets) - the white cabinets with the vent screen at the top,
like the 3 shown in the middle of IMG_8833 in Matsayz's post above yours. The power conversion cabinets turn the AC into DC and feed it to the 4 charging posts (aka pedestals) connected to it under control of the car's battery management system.
The V3 cabinets can also share DC power via a DC buss that connects each of them.
