Electric Motor Full-Load Current Calculation

What is the full-load current of a 500-HP pump motor rated at 480 V and 3-phase, with a given current of 550 A?

The motor's full-load current is approximately 778.33 A.

Explanation:

To find the motor's full-load current, we need to use the power formula P = IV, where: - P is power (in watts) - I is current (in amperes) - V is voltage (in volts) In this case, the power of the pump motor is 500 HP, which is equivalent to 500 x 746 watts. The voltage is given as 480 V. Plugging these values into the formula, we can find the current: P = IV 500 x 746 = I x 480 I = (500 x 746) / 480 I ≈ 778.33 A Therefore, the motor's full-load current is approximately 778.33 A.
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