Pull the cables into the junction box. Most junction boxes have holes in their sides, called “knock outs. All of the cables should enter through different holes and only touch inside. I will walk you through 4 different ways to bring wire into a metal box so you can apply these new skills on your next DIY electrical projects. Chapters 0:00 Intro 0:24 Wiring Romex Into A Metal Box 5:06 Understanding Homeowners Insurance Coverage And Cost 6:24 Wiring MC Cable Into A Metal Box 8:16. A junction box provides a code-approved place to house wire connections, whether for outlets, switches, or splices. The process can be intimidating for DIYers, but with the right tools and knowledge, it doesn't have to be. Here's how to run wire into an electrical box safely. A single gang electrical box (one gang box) is where electricians install a switch, plug, or thermostat! We splice wires in the box to carry on power (junction box), or use switch legs to turn a light on or off. To complete the electrical circuit, tie together the same-colored wires and hold. Learn how to make an electrical junction box with this step-by-step guide.
