NCCER Load Calculations – Feeders And Services (26401-23) Practice Test

A 30,000 VA load is supplied by a 240V single-phase feeder. What is the current in amps?

125.00 A 110.00 A 120.00 A 130.00 A

Correct Answer:

125.00 A

Explanation:

In a single-phase system, apparent power S equals voltage times current: S = V × I. So the current is I = S / V. Here, S is 30,000 VA and V is 240 V, so I = 30,000 / 240 = 125 A. Verifying: 125 A × 240 V = 30,000 VA, which matches the given load. If you were using real power instead of apparent power, you’d divide by the voltage and multiply by the power factor, but with apparent power the division by voltage gives the current directly.

Access more questions from this quiz

Continue to NCCER Load Calculations – Feeders and Services (26401-23) Practice Test for more practice questions and the full quiz experience.

Access More Questions