Transformer kVA & Buck-Boost Sizer

Pick the right kVA, tap, and configuration for a transformer job.

Primary (V)Secondary (V)Connected load (kVA)Phases

Result

Secondary current

124.9 A

Minimum kVA (125%)

56.3 kVA

Configuration

480Δ → 208Y

About this tool

Step down from common primaries (480, 277, 240) to 120/208, choose buck-boost or isolation, and conductor recommendation.

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