Joining Electrical Cables In Walls

Start by marking the desired location for the box on the walls.

Joining electrical cables in walls.

Once the studs are located outline the position of the old work electrical boxes on the wall. Use a wire nut size appropriate for the number and gauge of the wires you re using. Line up the wire ends then tighten electrical caps photo 1. Run exteneded cables in safe zone to where they need to be dropped to new outlets.

To move an accessory lower on the wall. Push up into ceiling space crimp joints dont need to be accessable. Instead we use special approved connectors. With the exception of stranded wire which we ll talk about below it s important to make sure the ends of all wires are lined up before twisting on the wire nut connector.

A plastic connector called a wire nut is used to insulate and secure the splice. Electrical wires in a building are sometimes joined without twisting wires together. Install the wire connector place the wire nut connector over all of the wires. To do this you must find the location of the wall studs using a stud finder.

Electrical splices can never left on their own in a wall or ceiling cavity. The box itself must remain accessible and cannot be hidden behind drywall or other building materials that would require removal to get to the box. When installing them in finished walls electrical boxes should be located between studs. The best way to strip wires is to use a pair of basic wire strippers.

Wiring splices are made by joining the bare metal ends of wires together. When splicing insulated wire you have to strip the insulation from the end of the wire to expose the metal core which may be solid or stranded copper. Chase down to new possition. Now and again i need to join a cable that is buried in a wall sometimes in a stud wall sometimes to be plastered over.

Pull cables out of wall use crimps and enclosures not j b. Wire splice connections must be housed inside a covered electrical box known as a junction box. Firstly are your sure they drop from the ceiling secondly i would personally never join a cable that was going to be buried in plaster or cement however thats not to say it cannot be done and be compliant crimp the cables using a decent correct size crimp and correct crimping tool this connection should then be encapsulated with heat shrink. A splice is the joining of two or more wires by twisting them together.