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Electrical Transformer Calculation
Construction is Easier
with Smart Conalytics™
Electrical Transformer Calculator
The Construction Monkey Transformer Calculator lets you figure out electrical characteristics of your system given a specific transformer size. By inputting the primary and secondary electrical system characteristics and the transformer properties Construction Monkey will calculate the disconnect size and feeder size for both the primary and secondary.
Make your selections below and the form will automatically update the values.
Enter Information
Primary Side of Transformer
Voltage/Phase:
Transformer Information
Primary Configuration:
Transformer Size:
Secondary Configuration:
Seconday Side of Transformer
Voltage/Phase:
Wire Properties
Results
Enter information and click on the "Calculate" button to get the results.
Notes:
1Maximum conduit size is 4"
2Conduit is assumed to be EMT
3Maximum wire size is 500MCM
3Overcurrent Sizes are based on NEC Table 450.3(B)
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No guarantees are made as to the accuracy of the calculation or compliance with
local codes. Verify all calculations with a professional engineer. If you
find an error, or have a suggestion, please send us an email.