Which table provides the full-load current values used for motor sizing in the example motor?

Which table provides the full-load current values used for motor sizing in the example motor?

• A. Table 430.250
• B. Table 430.6
• C. Table 430.7
• D. Table 430.22

Answer: (A)

The essential idea is that motor sizing depends on how much current the motor draws when it’s at full load. That full-load current is a standardized value published for motors, so engineers can size conductors and protection correctly without guessing. The table you use is the one that lists full-load currents for motors by horsepower and voltage—the exact current the motor will draw at its rated load. By looking up the motor’s HP and voltage, you get a specific ampere value to use for selecting wire sizing and the appropriate overload or protection devices. Other tables in the same resource address related questions (like how protection should be set or other motor specifications), but they don’t provide the standard full-load current values used for the basic sizing step.

The essential idea is that motor sizing depends on how much current the motor draws when it’s at full load. That full-load current is a standardized value published for motors, so engineers can size conductors and protection correctly without guessing. The table you use is the one that lists full-load currents for motors by horsepower and voltage—the exact current the motor will draw at its rated load. By looking up the motor’s HP and voltage, you get a specific ampere value to use for selecting wire sizing and the appropriate overload or protection devices. Other tables in the same resource address related questions (like how protection should be set or other motor specifications), but they don’t provide the standard full-load current values used for the basic sizing step.