The final part of this series examines incident energy and arc flash boundary calculations for the 480V panelboard example used in this series. IEEE 1584—IEEE Guide for Performing Arc Flash Hazard Calculations defines...

I still hear this more than I should. Someone wants to list “no arc flash hazard exists” on the arc flash warning label. When I ask why, the response is usually along the lines of, “Because the incident energy is less than 1...

The 2021 Edition of NFPA 70E, Standard for Electrical Safety in the Workplace, introduces a new informational note to address the age-old dilemma: How do you verify absence of voltage when the calculated incident energy is...