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The controller shall have a horsepower rating not lower than the horsepower rating of the motor.
EXCEPTION: No. 1: For a stationary motor rated at 2 horsepower or less, and 300 volts or less, the controller shall be permitted to be a general-use switch having an ampere rating not less than twice the full load current rating of the motor.
On AC circuits, general-use snap switches suitable only for use on AC (not general-use AC-DC snap switches) shall be permitted to control a motor rated at 2 horsepower or less and 300 volts or less having a full load current rating not more than 80 percent of the ampere rating of the switch.
EXCEPTION: No. 2: A branch circuit inverse time circuit breaker rated in amperes only shall be permitted as a controller. Where this circuit breaker is also used for overload protection, it shall conform to the appropriate provisions of this Article governing overload protection.
EXCEPTION: No. 3: The motor controller for a torque motor shall have a continuous-duty full load current rating not less than the nameplate current rating of the motor.
(Title 24, Part 3, Section 430-83.)
NOTE: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.
1. Editorial correction filed 11-2-83 (Register 83, No. 45).
2. Amendment deleting subsection (a) designation only filed 8-27-86; effective thirtieth day thereafter (Register 86, No. 37).
3. Editorial correction of Exception No. 1 (Register 92, No. 15).