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# Transformer calculator

# Transformer calculator

**HOW TO SIZE A TRANSFORMER**

- Transformers are sized by determining the total load required (in amps).
- Transformer capacity is rated in KVA (kilo-volt-amperes).
- The load voltage and load amps must be known to calculate KVA rating.

**FORMULAS USED IN CALCULATOR:**

- 1-Phase KVA = Volts x Amps / 1000
- 1-Phase Amps = KVA / Volts x 1000
- 3-Phase KVA = Volts x Amps x 1.732 / 1000
- 3-Phase Amps = KVA / Volts / 1.732 x 1000

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