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Thread Starter

Mike Phillips

I have the need for 20 amps of 3 phase, 440 power but only have 220 in the building. I need to know the effeciency of step up transformers to calculate the primary current.
 
B

Bouchard, James [CPCCA]

For small transformers like yours the best you will get with efficient designs is 97%.

James Bouchard
 
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