Utility-scale single-lines and three-lines, protection schematics and relay wiring, AC and DC control power schematics, cable schedules, control building and ground grid drawings, equipment layouts and panel wiring, and logic diagrams — what each sheet is built to show, and what it deliberately leaves for another sheet.
A utility or industrial power system's drawing set is larger and more specialized than a building's electrical set — bus arrangements (ring bus, breaker-and-a-half) become their own design decision worth a dedicated single-line convention, protection schematics carry lockout-relay and breaker-failure logic a low-voltage schematic never needs, and an independent battery-backed DC schematic exists specifically because AC station service can't be trusted to survive the same disturbance protection is responding to. This module walks each sheet type an engineer in this field actually produces or reads, cross-referenced directly against the studies Module 12 covers — the ground grid drawing has to match the IEEE 80 calculation it was built from, and the single-line's annotated fault current has to match the short-circuit study's real output, not a stale number carried over from an earlier revision.
By the end of this module you should be able to open an unfamiliar utility or plant drawing set, identify its bus arrangement and protection philosophy from the single-line alone, and know exactly which companion sheet — three-line, schematic, wiring diagram, cable schedule — actually carries the detail you need next.