Joining Electrical Cables In Walls

Pull cables out of wall use crimps and enclosures not j b.

Joining electrical cables in walls. Wire splice connections must be housed inside a covered electrical box known as a junction box. Electrical splices can never left on their own in a wall or ceiling cavity. Instead all splices must be contained within an approved junction box or fixture electrical box. Once the studs are located outline the position of the old work electrical boxes on the wall.

Line up the wire ends then tighten electrical caps photo 1. The alumiconn tm connector shown here is used to splice a copper pigtail wire together with one or two aluminum wires as a step in reducing the fire hazard associated with aluminum electrical wiring. A splice is the joining of two or more wires by twisting them together. Start by marking the desired location for the box on the walls.

Use a wire nut size appropriate for the number and gauge of the wires you re using. Install the wire connector place the wire nut connector over all of the wires. Push up into ceiling space crimp joints dont need to be accessable. Electrical wires in a building are sometimes joined without twisting wires together.

To do this you must find the location of the wall studs using a stud finder. 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. 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. A plastic connector called a wire nut is used to insulate and secure the splice.

Wiring splices are made by joining the bare metal ends of wires together. When installing them in finished walls electrical boxes should be located between studs. 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. To move an accessory lower on the wall.

Sometimes when someone has drilled through it last one was a kitchen fitter who should have known better or sometimes to extend a cable e g. The best way to strip wires is to use a pair of basic wire strippers. Run exteneded cables in safe zone to where they need to be dropped to new outlets. Instead we use special approved connectors.