1992 Leisure Bay Shalamar hot tub. Hercules 220 pack (not sure of model)

I just replaced all seals around the jets. I went to power the tub on and the breaker keeps tripping. I opened up the pack & discovered that one of my hot lines had a single strand of wire make contact with the ground wire. Something in the pack has obviously been fried. I know the power is getting to the pack, but does not stay on. I am looking for suggests as to what would be the best direction from this point. I am able to get/replace internal components - just not sure which ones???