Junction Box Diagram - Wiring Diagram Database - I trimmed the recent (black) and white (impartial) wires to an same period with the bare copper floor wire, stripped approximately 3/4 inch of insulation from the ends, then tightened the 2 screws on the nm cable clamp to cozy the cable to the junction box. The nm cable clamp additionally protects the nm-b 14/2 cable from nicks through the sharp metals edges of the junction box knockouts.
A way to wire an attic electric outlet and light: a brand new junction box is stressed for the transfer controlled electric outlet for the attic mild after getting rid of the old light transfer and wiring. This challenge is continued from the exposed paintings cover junction field undertaking. Also see part 1 for the project advent.
The line-side nm-b 14/2 wires are fed via the 3/eight″ nm cable clamp into the junction box, the box is located several inches decrease on the two×4 framing by using attic stairway to provide as a minimum 6 inches of wires inside the box, which is decided through the period of the “short” floor wire. The junction container bracket is fastened to the two×four framing with pan-head wood screws.
I must eliminate it the antique electrical field because the ground cord is just too short to make a right pigtail connection. The electrician twisted and crimped the line- and cargo aspect floor wires collectively, cut off floor wires within the container, then used a metallic crimp sleeve to connect the receptacle ground wire, that is a violation of nec three hundred.14. In line with nec three hundred.14, all conductors have to make bigger at least 6 inches within the container and at the least three inches past the container. Otherwise, the constructing inspector will flag it and won’t sign-off on the electrical permit.
The plastic light switch electrical box is eliminated by placing a huge screw driving force below the field to pry it off the two×four framing. The container is held by nails and changed into smooth to get rid of.
Steel junction containers and outlet bins should be grounded. (Word: plastic electrical boxes do now not require grounding.) I need to have installed the #10 inexperienced floor screw and 14 gauge ground wire while making the floor wire pigtail connections earlier, but i was focused on wiring the hole & transfer and inadvertently overlooked this vital step. The correction is easy with twine nut pigtail connections:.