The answer to 'why is my electrical panel dimming lights' is that a dimming or flickering electrical panel is often caused by an overloaded circuit or loose connections. This can lead to voltage fluctuations that cause the lights to dim or flicker. Some common causes include too many appliances or devices on a single circuit, loose wiring in the panel, or a problem with the main service feed coming into your home.
If you notice your lights dimming or flickering when certain appliances or devices are turned on, it's a sign that the circuit is overloaded. This can be a fire hazard, so it's important to address the issue right away. In some cases, you may be able to resolve the problem by moving some devices to a different circuit or upgrading the circuit breaker. However, if the issue persists or you're not comfortable working with electrical systems, it's best to call a licensed electrician to diagnose and fix the problem.