All wire connector types are designed to create a secure connection between electrical wires and prevent the wires from contacting anything that could create a short. They’re necessary for making any wiring connections, including installation of electrical receptacles, light switches, ceiling fans and light fixtures. You’ll also find specialized connectors for use in wet locations or connections that need to be buried.
Connectors for wires have minimum and maximum wire gauges they can handle, often noted along with the maximum number of wires they can accept. For example, a wire connector might have a minimum capacity of two 14-gauge wires, indicated as “2 #14 wires,” and a maximum capacity of four 12-gauge wires, indicated as “4 #12 wires.”
Other specifications to consider include:
You also need to know the type of wire you’re working with. Standard wire connectors are designed for use with copper wire only — don’t use them with aluminum wire. If you’re working with aluminum wire, make sure the connector is specified for that application.
Wire connectors are UL Listed fasteners used to make a tight connection with little interference between two or more electrical wires in an electrical box. Made of flame-retardant materials, wire connectors prevent wires from contacting other wires or exposed metal surfaces, which could cause a dangerous fault or short circuit.
This guide will explain the different types of wire connectors, so you can feel confident you’re choosing the right connectors for your project.
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