When the emergency generator is in service how are the labels treated on the breakers ? Is utility power and generator power treated the same with arc flash ? Is there two labels for this type of setup. Thanks for your help.
When the emergency generator is in service how are the labels treated on the breakers ? Is utility power and generator power treated the same with arc flash ? Is there two labels for this type of setup. Thanks for your help.
Repeat the arc flash study for emergency generator operation, find out the incident energy at various points, reduce the instantaneous trip setting of the breakers etc so that one labeling may apply in both of the cases.
