shall be marked with the manufacturer's name or identification, the voltage
, the current or horsepower rating, the short-circuit current rating
, and other necessary data to properly indicate the applications for which it is suitable.
Exception No. 1: The short-circuit current rating is not required for controllers applied in accordance with 430.81(A) or (B).
Exception No. 2: The short-circuit rating is not required to be marked on the controller when the short-circuit current rating of the controller is marked elsewhere on the assembly.
Exception No. 3: The short-circuit rating is not required to be marked on the controller when the assembly into which it is installed has a marked short-circuit current rating.
Exception No. 4: Short-circuit ratings are not required for controllers rated less than 2 hp at 300 V or less and listed exclusively for generalpurpose branch circuits.
A controller that includes motor overload protection suitable for group motor application shall be marked with the motor overload protection and the maximum branch-circuit short-circuit and ground-fault protection for such applications.
Combination controllers that employ adjustable instantaneous trip circuit breakers shall be clearly marked to indicate the ampere settings of the adjustable trip element.
Where a controller is built in as an integral part of a motor or of a motor-generator set, individual marking of the controller shall not be required if the necessary data are on the nameplate. For controllers that are an integral part of equipment approved as a unit, the above marking shall be permitted on the equipment nameplate.
Informational Note: See 110.10 for information on circuit impedance and other characteristics.