The answer to 'flickering emergency electrical service' is that there are several common causes, including loose or faulty electrical connections, issues with the electrical panel or circuit breakers, or problems with the emergency generator or backup power system. Symptoms may include intermittent flickering or dimming of lights, appliances that turn on and off unexpectedly, or complete loss of power during an outage.
In many cases, these issues can be resolved through basic troubleshooting and repairs, such as tightening connections, resetting circuit breakers, or checking the emergency generator. However, if the problem persists or you're unsure of the cause, it's best to call a licensed electrician to diagnose and fix the issue. Attempting complex electrical work without the proper training and equipment can be dangerous and may even make the problem worse.