NEC 406.9(C)

NEC 358.26

The maximum number of bends between pull points cannot exceed 360 degrees (four 90-degree bends). Exceeding this limit makes wire pulling extremely difficult and risks damaging conductor insulation.

NEC 400.8

Window AC units must be plugged directly into a wall outlet, never an extension cord. Extension cords cause voltage drop, overheating, and are a fire hazard with high-amperage equipment.

NEC 406.12(1)

All 125-volt, 15- and 20-ampere receptacles in dwelling-unit bathrooms must be listed tamper-resistant. A standard (non-TR) receptacle is a violation. (Note: a 15A receptacle is itself permitted on a 20A circuit serving two or more receptacles per Table 210.21(B)(3) — the defect here is the missing tamper-resistant listing, not the amperage.)

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.