Arc-Flash Calculations

Review the basics of arc-flash calculations, then look at how to perform them in ElectroBIM.

We look at the following topics for arc-flash calculations:

• Issues ElectroBIM users face when calculating arc-flash
• Calculating fault current values
  • Getting the starting fault from the utility
  • Determining wire lengths and sizes
• The underlying basis for arc-flash calculations
• Configuring your devices in the Panel Edit command
  • Resultant calculations for incident energy and arc-flash boundary distance
• Determining the breakers for each device
  • Anatomy of a time-current curve graph
  • What you can do when you don't know what breakers will be used
  • Setting and configuring the breaker curve
• The arc-flash schedule and arc-flash stickers
  • Anatomy of an arc-flash sticker

We also answer the following questions:

• "What is the approach for calculating arc-flash with single-phase devices?"
• "What do I do when I don't have a necessary piece of information?"
• "How do you address calculations through a transfer switch being fed by a standby generator?"
• "What do I do if the breaker database doesn't have what I need?"