The answer to 'why is my light fixture circuit overload' is that the circuit is drawing more electrical current than it is designed to handle. This can be caused by several common issues, such as a faulty light fixture, too many devices connected to the circuit, or a problem with the wiring.
Symptoms of an overloaded circuit include flickering or dimming lights, warm or hot outlets, circuit breakers tripping frequently, or even burning smells. To solve the problem, you'll need to identify and address the root cause. This may involve replacing a malfunctioning light fixture, removing devices from the overloaded circuit, or having an electrician inspect and repair any wiring issues.