I responded to a commercial call for an emergency electrician. Upon arrival, I found that a main breaker had tripped, cutting off power to a section of the building. I reset the breaker and inspected the distribution panel for any underlying issues. I discovered that the overloaded circuits were causing the issue, so I advised the facility on necessary electrical upgrades to prevent future outages. After ensuring the breaker and wiring were functioning correctly, power was restored, and operations resumed.