How it works
Rated secondary current = kVA × 1,000 ÷ (voltage × phase factor).
Input definitions
- Transformer rating (kVA)
- Enter the value in the labeled unit.
- Secondary voltage (V)
- Enter the value in the labeled unit.
- Phase factor: 1 single, 1.732 three
- Enter the value in the labeled unit.
A worked example
- Transformer rating (kVA)
- 25
- Secondary voltage (V)
- 240
- Phase factor: 1 single, 1.732 three
- 1
Assumptions & limits
Uses only the values entered. Rates are illustrative inputs, not live quotes, legal rules or personalised advice. Check provider terms, local requirements and measurements before acting.
Sources & review
Maintained by AnsRio. Methods and examples use automated checks; this does not imply independent professional certification.
Method updated 2026-10-19. Content checked against the stated method and examples. Our verification approach.
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Common questions
Does this select overcurrent protection?
No. Protection, conductor sizing, inrush and code rules need a qualified design.
How does Transformer secondary current calculate the result?
Rated secondary current = kVA × 1,000 ÷ (voltage × phase factor).
What should I verify before using Transformer secondary current?
Uses only the values entered. Rates are illustrative inputs, not live quotes, legal rules or personalised advice. Check provider terms, local requirements and measurements before acting.