I replaced the 4 transformers in my flourescents. 4 @ 2 96"T12 each. All the lights worked great. Later on the circuit was blown. I tried to reset and nothing. It's a workshop with a 100 amp Homeline panel. I replaced the 20 amp breaker with a new Square D. It is very loose on the breaker bar, it only stays on with the cover on. The circuit will not come back on. Is there a different breaker for the Homeline box or is the breaker bar toast? Thanks.