The answer to 'why is my dimmer switch power surge' is that a power surge through a dimmer switch is often caused by an electrical overload, faulty wiring, or a problem with the dimmer itself. Dimmer switches can sometimes experience power surges when the electrical load exceeds the switch's capacity, or if there are issues with the home's electrical system or wiring.
Some common symptoms of a power surge through a dimmer switch include flickering or dimming lights, the switch feeling hot to the touch, or the switch tripping the circuit breaker. To resolve the issue, you may need to check the electrical load on the circuit, inspect the wiring for any damage, or replace the dimmer switch if it is faulty. If you are not comfortable troubleshooting electrical issues, it is best to call a licensed electrician to diagnose and fix the problem safely.