Arc-Flash Basics

Design Master Electrical RT can also calculate arc-flash values for each piece of distribution equipment. Calculating arc-flash requires an additional piece of information: the arcing time for the breaker. You will have to manually look up the arcing time based upon a time-current curve from the manufacturer.

Run the Panel Edit command. Enter the Arcing Time (100%) and Arcing Time (85%) values in the Arc-Flash Calculations section for the panels you want to calculate arc-flash for.

Once the times are input and you have run the calculations, you can view the final values in schedule using the Schedules->Arc-Flash command. You can also print stickers using the Schedules->Arc-Flash Stickers command.

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