Conductors supplying a motor-compressor load in addition to other load(s) as calculated from Article 220
and other applicable articles shall have an ampacity
sufficient for the other load(s) plus the required ampacity
for the motor-compressor load determined in accordance with 440.33
or, for a single motor-compressor, in accordance with 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-compressor(s) and other loads to be operated at a given time.