New York State Master Electrician Practice Exam

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For portable motors rated at 1/3hp or less, what components can be used?

  1. A hardwired connection

  2. An attachment plug and receptacle

  3. A manual disconnect switch

  4. A dual circuit breaker

The correct answer is: An attachment plug and receptacle

For portable motors rated at 1/3 horsepower or less, the use of an attachment plug and receptacle is permitted due to their design for mobility and convenience in various applications. These motors can be easily connected and disconnected from the power source, making them versatile for different settings and tasks. Using an attachment plug and receptacle allows for safe energy disconnection without the need for tools, which contributes to ease of operation and enhances user safety. This arrangement is also compliant with electrical codes that facilitate the use of portable equipment. The other options, while they have their own specific applications, do not inherently provide the convenience and safety features that an attachment plug and receptacle do for portable motors of this size.