Which of the following is NOT a primary method of wiring device termination?

The method identified as not being a primary method of wiring device termination is the twist wire approach. While twist wire techniques are commonly used in electrical work, such as for joining two wires together, they do not qualify as a standard method specifically for terminating wiring devices, like outlets or switches.

In contrast, side-wire termination is a common technique where wires are secured to the device using terminal screws, allowing for a solid and secure connection. Speed wire, which often refers to a quick-connect method that simplifies terminations, enables faster and more efficient installations. Modular termination typically involves plug-and-play connectors or specific mounting systems that facilitate easy connections made to established electrical devices.

Understanding these primary wiring termination methods helps electricians choose the most effective and reliable options for their installations and repairs in various electrical applications.