The humble junction box might not be what you think of when you think of your home's electricity, and you might even wonder what it does. Do you even need one?

Fig. 1. Use 314.28(A) to size pull boxes, junction boxes, and conduit bodies when using conductor sizes 4 AWG and larger. Suppose you have a 2-inch raceway coming into a 10-inch square box, and a ...

Conductor damage during installation is one consequence of under sizing junction and pull boxes. This damage is often not apparent until post-installation cable testing. Then, after the boxes are ...