Arc-Flash Calculator
The following steps are required for an Arc-Flash Hazard Analysis:
1. Calculate the available 3-phase bolted fault current available at every point in the system where workers may be exposed to energized (hot) system components.
2. Determine the device rating.
3. Determine the arcing current using the Littelfuse Arc-Flash Calculator Program. Default values are: 600 volts AC, 1.25” arc gap, 18” distance from arc to receiving surface. The options are explained in the links to the left.
4. Calculate the incident energy.
5. Read the flash protection boundary.
6. Select PPE required from calculator.
All of the information and formulas contained in the Littelfuse Arc-Flash Calculator program are believed to be accurate. However, Littelfuse, Inc. makes no warranty, express or implied for its use. This includes warranties of merchantability and/or fitness for a particular purpose. Littelfuse does not warrant, guarantee or make any representations regarding the use of the Littelfuse Arc-Flash Calculator in the terms of its correctness, accuracy, reliability, or otherwise. The user assumes the entire risk of its performance and accuracy for a given purpose.
