I just did a job moving a sub panel over 1 stud bay for a customer and it is fed by a 60 amp breaker. The feeder wire is 6/3 nm copper. I was under the impression that 6/3 is only good for 55 amps. This panel was inspected a little over a year ago and passed. I'm not sure who originally installed it but this is obviously on too big of a breaker correct?