You may choose to see controllers by selecting one or more criteria to determine the. To select the right motor controller for your vehicle, please choose from the three key defining parameters.For example, according to the table, if you have a 1HP motor and you operate it at 3600 RPM continuously, your service factor is 1.25. Calculate or determine your service factor by choosing the service factor that corresponds to your hp and various RPM levels. The table relates service factors to hp and revolutions per minute, or 'RPMs'.The Adjustable Speed Drive is one type of power conversion equipment that provides a means of adjusting the speed of an electric motor, 100. These changes will help the user to determine the correct ampacity for conductors used with power conversion equipment. Changes to the 2020 NEC include the addition of several paragraphs in section 430.122.Additional NEC rules that pertain are in NEC Sections 210-20 (a), 215-3, and 384-16(d). National Electrical Code NEC 240-3 requires that the electrical branch circuit, feeder wire, and electrical service conductors shall be protected against overcurrent in accordance with their ampacity ratings as specified in NEC Table 310-16.

2011 national electric code