Steve Linder
Member
the table in NFPA 70E that allows for arc flash hazard category determination based on task allows a level 0 protection for operation of a 240v circuit breaker with the covers on.
this table is to be used in lieu of an arc flash study as long as the opening time and short circuit available limitations in the text are met.
my question is, if there has been an arc flash study and say the panel has been determined to be a level 4, then would the operation of the circuit breaker be required to be done with level 4 protection with the covers on?
this table is to be used in lieu of an arc flash study as long as the opening time and short circuit available limitations in the text are met.
my question is, if there has been an arc flash study and say the panel has been determined to be a level 4, then would the operation of the circuit breaker be required to be done with level 4 protection with the covers on?