NEC 430.102(B)

NEC 408.4 / NFPA 70E 205.2

A single-line diagram showing the electrical distribution system must be available to workers for safe operation and troubleshooting. Without it, workers cannot identify all energy sources, which is essential for lockout/tagout procedures.

NEC 408.4(A)

Every panelboard must have a legible circuit directory identifying each circuit. On a commercial TI project, unlabeled panels are an immediate inspection failure and create a safety hazard for other floor tenants and maintenance personnel.

NEC 430.1 / NFPA 90A / high-rise office Electrical Plans

Motorized dampers and motorized shades shown on the high-rise office electrical plans must be connected to the appropriate branch circuits with proper control wiring. Unconnected motorized dampers can prevent proper smoke control in a high-rise fire event, creating a life-safety hazard.

NEC 430.32

Each motor must have overload protection to prevent damage from sustained overcurrent. Overloads are separate from the branch circuit short-circuit protection and are typically sized at 115-125% of motor FLA.

NEC 430.72

A motor control circuit tapped from the branch-circuit conductors must be protected against overcurrent per the control-circuit rules; an unprotected tap is a fire risk.

NEC 440.14

NEC 440.14 requires the disconnecting means to be within sight from and readily accessible from the air-conditioning or refrigerating equipment. 'Within sight' (or 'In Sight From') per NEC Article 100 means the equipment is visible AND not more than 50 feet distant. The scenario satisfies both: the disconnect is visible from the unit and only 30 feet away (under the 50-foot limit), and it is readily accessible on the exterior wall. There is NO NEC requirement that the disconnect be on the 'same level' as the equipment or that the servicer never leave the rooftop — a wall-mounted disconnect that is visible, within 50 feet, and readily accessible is fully compliant. The installation meets 440.14.