What is the primary characteristic of a wire nut?

The primary characteristic of a wire nut is that it securely holds wire connections together. This type of connector is designed to splice together two or more electrical wires, providing a safe and reliable method to create a continuous electrical circuit. Wire nuts achieve this secure connection by twisting onto the stripped wire ends, creating a tight fit that not only holds the wires together but also helps to prevent them from coming apart due to vibrations or other external factors.

Additionally, wire nuts are effective in ensuring electrical continuity while reducing the risk of shorts, which can lead to equipment failure or fire hazards if connections are not properly secured. This characteristic is particularly important in electrical applications where reliability and safety are paramount.