Lights can flicker for various reasons, including loose connections, voltage fluctuations, faulty wiring, or problems with the electrical grid. Persistent flickering may indicate an underlying issues that require investigation.

Circuit breakers are designed to protect electrical circuit afro overloads and short circuits by interrupting the flow of electricity when a fault is detected. They prevent electrical fires and damage to equipment.

You should call an electrician for any electrical work beyond simple tasks like changing light bulbs or resetting circuit breaker. This includes installation , repairs, electrical inspections ad troubleshooting.