**Contents**show

## What size breaker do I need for a 45 kVA transformer?

For a 45kVA transformer, 125A×1.25=156A, so use a **175A** protection device.

## How many amps can a 100va transformer handle?

A transformer with a 100 VA rating, for instance, can handle 100 volts at **one ampere** (amp) of current. The kVA unit represents kilovolt-amperes, or 1,000 volt-amperes. A transformer with a 1.0 kVA rating is the same as a transformer with a 1,000 VA rating and can handle 100 volts at 10 amps of current.

## How many kVA is a 200 amp service?

With your load single phase of 200 amps at 240 volts (which is what you have coming into you home) gives you **48 KVA**. This means that a 50 KVA should work.

## How many amps is 50kva?

kVA to amperes, table for conversion, equivalence, transformation (3F, 220Volt) :

How many kVA are: | Ampere Equivalence |
---|---|

2 kVA | 5.25 Amp. |

3 kVA | 7.87 Amp. |

4 kVA | 10.50 Amp. |

5 kVA | 13.12 Amp. |

## How many amps is 30kva?

kVA To Amps Calculator (With Table)

kVA (Apparent Power) | Voltage (220 V) | Amperage (A) |
---|---|---|

How many amps is 5 kVA? | 220 V | 22.73 Amps |

How many amps is 10 kVA? | 220 V | 45.45 Amps |

How many amps is 20 kVA? | 220 V | 90.91 Amps |

How many amps is 30 kVA? | 220 V | 136.36 Amps |

## How many amps is a 50 kva transformer good for?

Three Phase Transformer

KVA | 208V | 240V |
---|---|---|

37.5 | 104 | 90.3 |

45 | 125 | 108 |

50 | 139 |
120 |

60 | 167 | 145 |

## How many kVA is 40 amps?

Amp. to kVA, table for conversion, equivalence, transformation (Voltage = 220, AC, 3F):

How many Amps are: | Equivalence in kVA |
---|---|

10 Amps | Equivalent to 3.81 kVA |

20 Amps | 7.62 kVA |

30 Amps | 11.43 kVA |

40 Amps | 15.24 kVA |

## How do I convert kVA to amps?

**Calculation with line to line voltage**

- S
_{(}_{kVA}_{)}= √3 × I_{(}_{A}_{)}× V_{L-L}_{(}_{V}_{)}/ 1000. - So kilovolt-amps are equal to √3 times amps times volts divided by 1000.
- kilovolt-amps = √3 × amps × volts / 1000.
- kVA = √3 × A ⋅ V / 1000.
- S = √3 × 12A × 190V / 1000 = 3.949kVA.