Which wire connector is the most commonly used?

The wire nut is the most commonly used wire connector in residential and light commercial wiring. This type of connector is designed to join two or more wires together securely. It features a spiral design that allows for easy twisting onto the exposed ends of the wires. The internal spring and insulating plastic body provide a secure, reliable connection while also preventing exposure to electrical hazards.

Wire nuts are particularly popular due to their ease of use; a technician can quickly connect wires and ensure they are properly insulated without the need for specialized tools. They come in various sizes to accommodate different wire gauges and are widely available, making them a convenient choice for many applications.

Their versatility and safety features also contribute to their widespread use, as they can be employed in various voltage applications safely. In contrast, other types of connectors such as butt connectors or lugs may be more specialized and not as commonly utilized in general wiring tasks.