4ft arc flash boundry

[Barry1]

What happen to the 4ft arc flash boundry? Can we still use the 4ft boundry HRC 2

 

[zog]

It has been removed from the 70E, now the AFB is the distance at whoch the Ei is 1.2cal/cm2 if you did an arc flash analysis. If you are using the tables (And are within the limits) you use the AFB that have been added to the tables for that task.