Which disconnecting means can be used for a 2 horsepower, 240-volt, single-phase motor?

For a 2 horsepower, 240-volt, single-phase motor, multiple options for disconnecting means can be utilized based on the National Electrical Code (NEC) and general electrical standards. The correct approach involves understanding the various disconnecting means that can effectively isolate the motor for maintenance or safety purposes.

A disconnecting means must be suitable for the load it serves, adhere to the voltage rating, and comply with any local codes. In this case, options I, II, and III likely refer to different types of disconnect devices such as toggle switches, circuit breakers, or motor disconnects, all of which can adequately provide a means to cut off power to the motor.

Understanding the context of each disconnection option highlights that all these methods can serve as effective means to disconnect power, ensuring not only compliance with safety standards but also facilitating ease of maintenance. Therefore, any of these options, alone or in combination, can be used to meet the requirements for disconnecting a 2 horsepower, 240-volt motor.

This comprehensive selection emphasizes flexibility in installation practices, allowing electricians to choose a method that best fits the specific layout and requirements of the electrical system in place. Hence, the conclusion that any of these disconnecting means can be used holds true