Which component is commonly used to connect electrical wires together securely?

A wire nut is commonly used to connect electrical wires together securely because it provides a reliable and insulated means of joining multiple wires. When using a wire nut, the stripped ends of the electrical wires are twisted together, and the wire nut is then screwed onto these twisted ends. This not only ensures a tight connection but also offers protection against moisture and dust, which can cause electrical failures or hazards. Wire nuts are particularly favored for their ease of use and effectiveness in creating a safe and durable bond between wires in residential and commercial electrical installations.

While screw terminals and splice connectors also serve the purpose of connecting wires, wire nuts are often preferred for their versatility and simplicity. Screw terminals typically require a specific type of terminal block or connector and can be less convenient for quick wire connections. Splice connectors may offer a different method of joining wires but might not provide the same level of insulation and protection found with wire nuts. Cable glands, on the other hand, are primarily used to secure and protect cables as they enter a junction box or enclosure, not specifically for connecting wires.