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 430.32(A)(1)

This is correct. NEC 430.32(A)(1) requires a separate overload device for a continuous-duty motor rated more than 1 HP to be selected to trip at no more than 125 percent of the motor's nameplate full load current where the motor has a marked service factor of 1.15 or greater. 13.5 x 1.25 = 16.875, so 16.8 amps is compliant. The detail to hold onto is that overload sizing uses the NAMEPLATE current, not the NEC 430.250 table value — the table current is used for conductor and short-circuit protection sizing. Confusing the two is one of the most common motor circuit errors.

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.