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

NEC 406.9(C)

Receptacles are not permitted within or directly over the bathtub or shower space (within 3 ft horizontally and 8 ft vertically of the threshold).

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 430.102(B)

A disconnecting means must be located within sight of the motor it controls so a technician can lock it out for service. None is provided here.

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.