Before doing any type of electrical work, always turn off power to the circuit at the breaker box.If you’re comfortable replacing the switch yourself, follow these steps: Replacing a light switch is not overly complicated, but if you are not familiar with these types of repairs, it’s best to leave it to a professional.
If you hear these sounds or if you hear a loud pop from the light switch, it’s time to replace the switch. The current may arc, which creates the crackling or hissing sound you hear. If the switch no longer makes good contact between the two terminals when the light is turned on, the power flows intermittently. Light switches get tons of use, so it’s no wonder that sometimes components within the switch may wear down or malfunction over time. Loose or faulty connections anywhere within an electrical circuit can lead to arcing as the current attempts to jump gaps. Electricity that escapes the wiring can cause heat to build up quickly, creating a serious fire hazard. The flow of electricity always creates heat, but the heat is contained within the insulated wires. Why Does My Light Switch Make Crackling Sounds When It’s Turned On? When the switch toggle is flipped to the “off” position, it opens the connection between the terminals, stopping the flow. Turning the light off is simply a matter of interrupting the flow.
When the toggle is in the “on” position, the power supply wire (black wire) connects the two terminals, allowing electricity to flow through to the light. How Does a Standard Light Switch Work?Įlectricity powers lights and other devices through a continual flow of current. Keep reading to learn what to do when a light switch makes a crackling or popping sound when turned on. If your light switch makes crackling sounds when turned on or if you hear a loud pop from the light switch, it’s probably time to replace the switch. Snapping, crackling, and popping sounds are great if they are coming from your breakfast cereal, but not when they’re coming from your light switch.
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