the values given in Table 430.247, Table 430.248, Table 430.249, and Table 430.250 shall be used to determine the ampacity of conductors or ampere ratings of switches, branch-circuit short-circuit and ground-fault protection, instead of the actual current rating marked on the motor nameplate. Where a motor is marked in amperes, but

Table 430.5 Other Articles

Equipment/Occupancy Article Section

remainder of this winding in one or more steps. A
standard part-winding start induction motor is arranged so that one-half of its primary winding can be energized initially, and, subsequently, the remaining half can be energized, both halves then carrying equal current. A hermetic refrigerant compressor motor shall not be considered a standard part-winding start induction motor.
Where separate overload devices are used with a standard part-winding start induction motor, each half of the motor winding shall be individually protected in accordance with 430.32 and 430.37 with a trip current one-half that specified.
Each motor-winding connection shall have branch- circuit short-circuit and ground-fault protection rated at not more than one-half that specified by 430.52.

Exception: A short-circuit and ground-fault protective device shall be permitted for both windings if the device will allow the motor to start. Where time-delay (dual- element) fuses are used, they shall be permitted to have a rating not exceeding 150 percent of the motor full- load current.

430.5 Other Articles. Motors and controllers shall also comply with the applicable provisions of Table 430.5.

430.6 Ampacity and Motor Rating Determination. The size of conductors supplying equipment covered by Article 430 shall be selected from the allowable ampacity tables in accordance with 310.15(B) or shall be calculated in accordance with 310.15(C). Where flexible cord is used, the size of the conductor shall be selected in accordance with 400.5. The required ampacity and motor ratings shall be determined as specified in 430.6(A), (B), and (C).

(A) General Motor Applications. For general motor ap- plications, current ratings shall be determined based on (A)(1) and (A)(2).

Air-conditioning and 440

refrigerating equipment

Capacitors 460.8, 460.9

Commercial garages; aircraft 511,513,

hangars; motor fuel 514,515,

dispensing facilities; bulk 516, and storage plants; spray 517 Part IV application, dipping, and

coating processes; and inhalation anesthetizing locations

Cranes and hoists 610

Electrically driven or 675

controlled irrigation machines

Elevators, dumbwaiters, 620

escalators, moving walks,

wheelchair lifts, and stairway chair lifts

Fire pumps 695

Hazardous (classified) 500-503 locations and 505

Industrial machinery 670

Motion picture projectors 540.11 and

540.20

Motion picture and television 530

studios and similar locations

Resistors and reactors 470

Theaters, audience areas of 520.48

motion picture and television studios, and similar locations

Transformers and transformer 450

vaults

not horsepower, the horsepower rating shall be assumed to be that corresponding to the value given in Table 430.247, Table 430.248, Table 430.249, and Table
430.250, interpolated if necessary. Motors built for low speeds (less than 1200 RPM) or high torques may have higher full-load currents, and multispeed motors will have full-load current varying with speed, in which case the nameplate current ratings shall be used.

Exception No. 1: Multispeed motors shall be in accor- dance with 430.22(A) and 430.52.

Exception