Garbage disposal switch produces a loud pop or spark when turned on or off.

Safety first: Turn off the breaker before removing the switch cover.

• Inspect switch: Remove the cover plate and check for burn marks or melted plastic around the switch.
• Tighten connections: Ensure all wires are firmly secured under the terminal screws; avoid using backstab connections for high-load devices.
• Replace switch: Install a new heavy-duty switch rated for motor loads, following Reginox and electrical code recommendations.
• Check for moisture: If the box is damp, identify and correct any water intrusion from walls or backsplash.