The requirements for motor-circuit overcurrent protection for motors over 1,000 volts are covered in which section of Article 430?

The requirements for motor-circuit overcurrent protection for motors over 1,000 volts are covered in which section of Article 430?

• A. 430.104
• B. 430.206
• C. 430.32
• D. 430.24

Answer: (B)

High-voltage motor circuits need their own focused rules in Article 430 to ensure proper protection without unnecessary trips. The section that specifically covers motor-circuit overcurrent protection for motors rated over 1,000 volts lays out how to size and apply the protective devices (fuses or circuit breakers) for those circuits and how they coordinate with the motor and its controller. This ensures faults are cleared safely and quickly while protecting conductors and equipment from damage. Other sections of Article 430 deal with different aspects—general motor protection, disconnecting means, or protection for lower-voltage motor circuits—not the high-voltage overcurrent protection specifics. So the high-voltage overcurrent protection section is the one that directly addresses motors over the 1,000-volt threshold.

High-voltage motor circuits need their own focused rules in Article 430 to ensure proper protection without unnecessary trips. The section that specifically covers motor-circuit overcurrent protection for motors rated over 1,000 volts lays out how to size and apply the protective devices (fuses or circuit breakers) for those circuits and how they coordinate with the motor and its controller. This ensures faults are cleared safely and quickly while protecting conductors and equipment from damage. Other sections of Article 430 deal with different aspects—general motor protection, disconnecting means, or protection for lower-voltage motor circuits—not the high-voltage overcurrent protection specifics. So the high-voltage overcurrent protection section is the one that directly addresses motors over the 1,000-volt threshold.