We supply liquid filled pad mounted distribution transformers. 45 kVA is the smallest standard three phase pad mounted rating and is usually easier to source than a 40. See three phase ratings and single phase ratings.
Full load current
| Configuration | Full load current |
|---|---|
| 480 V three phase | 48 A |
| 208 V three phase | 111 A |
| 240 V single phase | 167 A |
Nameplate full load current, computed from the standard formula. Free to cite with a link to this page. Any other rating, use the kVA to amps calculator.
What this rating is
40 kVA is a dry type rating rather than a standard pad mounted one. It appears in commercial fit outs feeding a 208Y/120 panel from a 480 volt service.
About 48 amps at 480 volts three phase and about 111 amps at 208 volts. Just below the 45 kVA pad mounted threshold.
Common questions
How many amps is a 40 kVA transformer
About 48 amps at 480 V three phase. About 111 amps at 208 V three phase. About 167 amps at 240 V single phase. Three phase current is kVA times 1000 divided by the voltage times the square root of three. Single phase leaves out the square root of three, which is why the single phase figures are much higher.
What is a 40 kVA transformer used for
40 kVA is a dry type rating rather than a standard pad mounted one. It appears in commercial fit outs feeding a 208Y/120 panel from a 480 volt service.
Is a 40 kVA transformer pad mounted
No, it is a dry type unit rather than a liquid filled pad mounted transformer. 45 kVA is the smallest standard three phase pad mounted rating and is usually easier to source than a 40.