Metal junction boxes always need to be grounded, whether you're using NM (non-metallic) plastic-sheathed cable or metallic cable. Metallic cable is self-grounding, as long as the cable is properly ...

Make Sure Cables Are Clamped If you're adding a new device or replacing an old device that doesn't need a junction box, don't forget to secure the incoming cable with a cable clamp. If the device ...

The home run cables from the modules to the external junction or combiner box for the entire array will use the USE-2 or PV wire called out in 690.31 (A). These conductors are usually 12 AWG or 10 AWG ...

The only things supporting that “floating” outlet/junction box is the electrical metallic tubing (EMT) connected on the right side of it and the metal cable connected on the left side of it. Neither ...

There is only 1 wire coming from the pole in my backyard, and it's split in 3 inside the junction box. One wire is dedicated to my cable modem.