What would be the total wattage for a 480 volt, 3-phase circuit with a load of 30 amps?

To determine the total wattage for a 480 volt, 3-phase circuit with a load of 30 amps, the appropriate formula to use is:

Total Power (W) = Voltage (V) × Current (A) × √3

In this situation, the voltage is 480 volts and the current is 30 amps. The factor of √3 (approximately 1.732) is included because this is a 3-phase circuit, which has a different power calculation compared to single-phase circuits.

Plugging the values into the formula:

Total Power = 480 V × 30 A × √3

Total Power = 480 × 30 × 1.732

Total Power = 480 × 30 × 1.732 ≈ 24,940.8 Watts

Thus, the total wattage for this circuit is approximately 24,940.8 Watts, which corresponds to the correct choice. This calculation is essential for electricians to ensure that circuits are adequately sized to handle the total load without tripping breakers or causing overheating in wires.