I have an 53 yr old breaker box that has 4-220 breakers than a space and a 60 amp breaker that powers the rest of the box. My question is how to wire up the 60 amp breaker, does it matter which wire from power bar goes to top and which goes to bottom. I had an electrician come out and he took it apart and never came back. The box dosnt have a disconnect in it so I cut power at meter head.