Did I understand you that you closed a breaker in on a faulted cable without testing it first. To say that is a extremely dangerous pratice is puting it mildly . Someone should loose their job over that.I know I would.
Our procedure is that on 480 volt you are NOT ALLOWED to close a breaker if it has triped on short time delay unless the circuit has been megged and you are only allowed to close it ONE TIME without on a long time delay trip without megging the circuit.
On anything above 480 you must megg or hipot on a overcurrent trip of any type plus the breaker must be serviced an if it is a oil circuit breaker the oil must be changed. I neglected to say that that if a 480 breaker trips on short time it must be serviced.
