The answer to 'panel upgrade tripping breaker' is that a tripping breaker after a panel upgrade is often caused by an electrical overload or short circuit. This can happen if the new panel has a higher capacity than the old one, or if the wiring wasn't properly updated to handle the increased load. Symptoms may include frequent breaker trips, buzzing noises, or warm panel components.
The solution typically involves having an electrician inspect the panel and wiring to identify the root cause, such as a faulty breaker, overloaded circuits, or improper grounding. They can then make the necessary repairs or upgrades to ensure the electrical system is safe and functioning properly.