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...

The duration of an arc flash is typically defined by how long it takes an upstream overcurrent device to operate and clear the fault. This requires using the device’s time current characteristic (TCC), which is based on the...

Time is everything when an arc flash occurs. The longer the duration, the greater the incident energy exposure, which is directly proportional to the duration. The 2018 edition of IEEE 1584 defines the arc duration, also...

An arc flash occurs when short-circuit current jumps across an air gap between energized conductors. The event is normally the result of initial (and inadvertent) contact between energized conductors that creates the short...

Performing an arc flash study can be complex enough, but the latest edition of IEEE 1584—IEEE Guide for Performing Arc-Flash Hazard Calculations has taken it to a whole new level. A lot has changed since arc flash studies...