Electrician Red Seal · Question
A single-phase transformer with a primary of 600V is rated at 5 kVA. What is its full load primary current?
The formula for single-phase apparent power (VA) is P = V × I. To find the current (I), rearrange to I = P / V. Therefore, I = 5000 VA / 600 V = 8.33 A.
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Question: A single-phase transformer with a primary of 600V is rated at 5 kVA. What is its full load primary current?
Answer options: ✅ 8.33 A
- 20.8 A
- 4.16 A
- 13.8 A
Correct answer: 8.33 A
Explanation: The formula for single-phase apparent power (VA) is P = V × I. To find the current (I), rearrange to I = P / V. Therefore, I = 5000 VA / 600 V = 8.33 A.
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