Which statement best describes a wire nut?

A wire nut is a type of connector specifically designed for securely splicing two or more electrical wires together. This device consists of a plastic cap with a threaded interior that allows it to twist onto the ends of the wires, holding them tightly together. This not only ensures a strong electrical connection but also creates a barrier that helps prevent short circuits and electrical faults.

The design of wire nuts allows for a variety of wire sizes and types to be effectively joined, making it a versatile and commonly used tool in electrical wiring. Additionally, wire nuts provide some level of insulation around the connections, safeguarding against exposure that could lead to electrical hazards.