# Arc Flash Calculator

Calculation of arc flash incident energy and protection boundary in accordance with IEE Std. 1584 'IEEE Guide for Performing Arc-Flash Hazard Calculations'.

### Sytem Details

### Equipment Details

### Arc Flash

^{2}):

**Tip:** registered users can save calculations.

## Notes

- Boundary Energy can be set at 5.0 J/cm
^{2}for bare skin or at the rating of any proposed PPE. - The limit of 5.0 J/cm
^{2}is that at which a person is likely to receive second degree burns. - To convert J/cm2 to cal/cm2 multiply by 0.239

Gap and distance factors | |||
---|---|---|---|

Voltage (kV) | Equipment Type | Typical gap between conductors (mm) |
Distance factor, x |

0.208 - 1 |
Open Air | 10-40 | 2.000 |

Switchgear | 32 | 1.473 | |

MCC and Panels | 25 | 1.641 | |

Cable | 13 | 2.000 | |

>1 - 5 | Open Air | 102 | 2.000 |

Switchgear | 13-102 | 0.973 | |

Cables | 13 | 2.000 | |

>5 -15 | Open Air | 13-153 | 2.000 |

Switchgear | 153 | 0.973 | |

Cables | 13 | 2.000 |

For a more detailed explanation of the calculation, please see: Arc Flash Calculations Post