HOLT Electricians Practice Exam

Which part of Article 430 contains the requirements for motor overload protection?

1. Part 1

2. Part 2

3. Part 3

4. Part 4

The correct answer is: Part 3

The correct identification of Part 3 of Article 430, which addresses motor overload protection, is crucial for ensuring the safe operation of motors in electrical installations. This section outlines the requirements that help prevent excessive current from causing overheating and potential damage to electric motors. Motor overload protection is essential because it enhances the reliability and safety of the electrical system by mitigating the risks associated with excessive load conditions. Part 3 specifies the types of overload devices that can be used, their installation criteria, and the necessary settings for trip currents based on the motor characteristics, ensuring that their operation aligns with industry standards. Understanding these provisions is vital for anyone involved in the installation, maintenance, or troubleshooting of electric motors, as compliance with these requirements helps maintain safety and operational efficiency in various applications.