freezers, drinking water coolers, and beverage dispensers, shall be used in determining the branch- circuit requirements, and each unit shall be considered as a single motor unless the nameplate is marked otherwise.

(C) Protective Device Rating Not to Exceed the Manu- facturer's Values. Where maximum protective device ratings shown on a manufacturer's overload relay table for use with a motor controller are less than the rating or setting selected in accordance with 440.22(A) and (B), the protective device rating shall not exceed the manufacturer's values marked on the equipment.

IV. Branch-Circuit Conductors

440.31 General. The provisions of Part IV and Article

310 specify ampacities of conductors required to carry
the motor current without overheating under the
conditions specified, except as modified in 440.6(A),
Exception No. 1.
The provisions of these articles shall not apply
to integral conductors of motors, to motor controllers
and the like, or to conductors that form an integral part
of approved equipment.
FPN: See 300.1(B) and 310.1 for similar requirements.

440.32 Single Motor-Compressor. Branch-circuit conduc tors supplying a single motor-compressor shall have an ampacity not less than 125 percent of either the motor- compressor rated-load current or the branch-circuit selection current, whichever is greater.

For a wye-start, delta-run connected motor- compressor, the selection of branch-circuit conductors between the controller and the motor-compressor shall be permitted to be based on 72 percent of either the motor-compressor rated-load current or the branch- circuit selection current, whichever is greater.
FPN: The individual motor circuit conductors of wye-start, delta-run connected motor-compressors carry 58 percent of the rated load current. The multiplier of 72 percent is obtained by multiplying 58 percent by 1.25.

440.33 Motor-Compressor(s) With or Without Addi tional Motor Loads. Conductors supplying one or more motor-compressor(s) with or without an additional load(s) shall have an ampacity not less than the sum of the rated-load or branch-circuit selection current ratings, whichever is larger, of all the motor- compressors plus the full-load currents of the other motors, plus 25 percent of the highest motor or motor- compressor rating in the group.

Exception No. I: Where the circuitry is interlocked so as to prevent the starting and running of a second motor- compressor or group of motor-compressors, the conductor size shall be determined from the largest motor-compressor or group of motor-compressors that is to be operated at a given time.

Exception No. 2: The branch-circuit conductors for room air conditioners shall be in accordance with Part VII of Article 440.

440.34 Combination Load. Conductors supplying a motor-compressor load in addition to a lighting or appli ance load as calculated from Article 220 and other appli cable articles shall have an ampacity sufficient for the lighting or appliance load plus the required ampacity for the motor-compressor load determined in

accordance with 440.33 or, for a single motor- compressor, in accordancewith 440.32.

Exception: Where the circuitry is interlocked so as to prevent simultaneous operation of the motor- compressor(s) and all other loads connected, the conductor size shall be determined from the largest size required for the motor-compressorfs) and other loads to be operated at a given