Wiring A Light Switch From A Junction Box

As with the ceiling rose the in cable supplies power from the consumer unit or previous junction box and the out cable connects to the next junction box. Junction box wiring diagram connecting cables using a junction box creating a spur using a junction box if you want to spur off from a current circuit to provide power to a new socket of light again make sure the power is off and the circuit is isolated and wire your junction box using the method below.

Definition Of Junction Box

Wiring a light switch from a junction box. This is a task that is easily accomplished at minimal expense as long as safety precautions are taken. The switch connects between the permanent live and the switched live terminal. When a new receptacle outlet or switch needs to be added to a room the easiest source for providing electricity to the new outlet box is to tap into an existing junction box. Wires connect only to each other never to a switch receptacle or fixture. The junction box effectively replaces the ceiling rose. Fig 2 explanation of above picture.

Fig 2 the feed cable comes from a previous junction box or from the consumer unit the red black and earth wires are connected to separate. Can contain light switches or receptacle ideal for areas where behind the wall installation is difficult or not possible. Allows circuits to be safely split and branched into different directions. If you would like to remove the light fixture box and there is access to the attic area then the fixture box could be removed and the wiring installed into a new junction box located in an accessible location where the new wiring for the additional light fixtures may be connected. Wiring diagram of a one way lighting circuit using junction boxes fig 1. Installed as part of a new construction.

Fig 1 the junction box should be wired as shown below. These cables have permanent live neutral and earth wires.