DIY Projects - One way lighting circuit using in line switching
There are different ways to connect up lighting circuits, one way is to use the in line method.
Line diagram of a one way lighting circuit using in line method (fig 1).
fig 1
A one way switch is quite easy to wire up.
fig 2
The cable going to the switch is connected as follows (fig 2). The red wire from the feed cable is connected to the top terminal, the red wire going to the light is connected to the bottom terminal, the black wires from both cables are connected together in a plastic terminal block and the earth wires are connected to the earth terminal. If you are using a plastic switch the earth wires will need to be connected to the terminal in the terminal box (as shown above) because there are no earth terminals on plastic switches.
A two way switch can also be used in in place of a one way switch, in this instance the red wire from the feed cable is connected to the common (C) terminal and the red wire going to the light is connected to the (L1) terminal. The (L2) terminal is unused.
A metal light switch must be earthed as seen below.
fig 3
If you are using metal light switches (fig 3) make sure you connect the earth wire to the earth terminal on the switch and fit an earth link wire from the switch to the earth terminal in the back box.
When using a ceiling rose on a circuit that utilises the in line switching method, again the wiring is quite easy, the difficult part is working at height and above your head.
fig 4
The cable going to the ceiling rose is connected as follows (fig 4). The red wire is connected to the same terminal block that contains the brown wire going to the lampholder, the black wire is connected to the same terminal block that contains the blue wire going to the lampholder and the earth wire is connected to the earth terminal.
DIY Projects - One way lighting circuit using junction boxes
There are different ways to connect up lighting circuits, one way is to use junction boxes.
Line diagram of a one way lighting circuit using junction boxes (fig 1).
fig 1
The junction box should be wired as shown below.
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 terminals. The earth wire must be covered with green/yellow sleeving.
The cable going to the light switch is connected as follows (fig 2). The red wire going to the switch is connected to the same terminal as the red wire from the feed cable, the black wire from the switch is connected to the spare terminal (terminal not yet used), and the earth wire is connected to the same terminal as the earth wire from the feed cable.
The black wire from the switch, should be marked with red tape or red sleeving to show it is a live wire, but in practice is often left unmarked.
The cable going to the ceiling rose is connected as follows (fig 2). The red wire going to the ceiling rose is connected to the same terminal as the black wire (marked with red tape or red sleeving) coming from the light switch, the black wire going to the ceiling rose is connected to the same terminal as the black wire from the feed cable and the earth wire is connected to the same terminal as the earth wire from the feed cable.
The following picture is exactly the same as the picture above with the addition of another cable which provides the feed for the next junction box.
fig 3
The cable going to the next junction box is connected as follows (fig 3). The red wire going to the next junction box is connected to the same terminal as the red wire from the feed cable, the black wire going to the next junction box is connected to the same terminal as the black wire from the feed cable and the earth wire going to the next junction box is connected to the same terminal as the earth wire from the feed cable.
A one way switch is quite easy to wire up.
fig 4
The cable going to the switch is connected as follows (fig 4). The red wire is connected to the top terminal, the black wire is connected to the bottom terminal and the earth wire is connected to the earth terminal. If you are using a plastic switch the earth wire will need to be connected to the terminal in the terminal box (as shown above) because there are no earth terminals on plastic switches.
A two way switch can also be used in in place of a one way switch, in this instance the red wire is connected to the common (C) terminal and the black wire is connected to the (L1) terminal. The (L2) terminal is unused.
A metal light switch must be earthed as seen below.
fig 5
If you are using metal light switches (fig 5) make sure you connect the earth wire to the earth terminal on the switch and fit an earth link wire from the switch to the earth terminal in the back box.
When using a ceiling rose on a circuit that utilises junction boxes, again the wiring is quite easy, the difficult part is working at height and above your head.
fig 6
The cable going to the ceiling rose is connected as follows (fig 6). The red wire is connected to the same terminal block that contains the brown wire going to the lampholder, the black wire is connected to the same terminal block that contains the blue wire going to the lampholder and the earth wire is connected to the earth terminal.
DIY Projects - One way lighting circuit using loop in ceiling roses
There are different ways to connect up lighting circuits, one way is to use loop in ceiling roses.
Line diagram of a one way lighting circuit using loop in ceiling roses (fig 1).
fig 1
The ceiling rose should be wired as shown below.
fig 2
Explanation of above picture. (fig 2)
The feed cable comes from a previous ceiling rose or from the consumer unit, the red wire is connected to the middle terminal block (Loop In), the black wire is connected to the same terminal block as the blue wire going to the lampholder (Neutral) and the earth wire is connected to the earth terminal. The earth wire must be covered with green/yellow sleeving.
The cable going to the light switch is connected as follows (fig 2). The red wire going to the light switch is connected to the same terminal (Loop In) as the red wire from the feed cable, the black wire coming from the lampholder is connected to the same terminal as the brown wire going to the lampholder (Live) and the earth wire is connected to the same terminal as the earth wire from the feed cable.
The black wire from the switch, should be marked with red tape or red sleeving to show it is a live wire, but in practice is often left unmarked.
The following picture is exactly the same as the picture above with the addition of another cable which provides the feed for the next ceiling rose.
fig 3
The cable going to the next ceiling rose is connected as follows (fig 3). The red wire going to the next ceiling rose is connected to the same terminal as the red wire from the feed cable, the black wire going to the next ceiling rose is connected to the same terminal as the black wire from the feed cable and the earth wire going to the next ceiling rose is connected to the same terminal as the earth wire from the feed cable.
A one way switch is quite easy to wire up.
fig 4
The cable going to the switch is connected as follows (fig 4). The red wire is connected to the top terminal, the black wire is connected to the bottom terminal and the earth wire is connected to the earth terminal.
If you are using a plastic switch the earth wire will need to be connected to the terminal in the terminal box (as shown above) because there are no earth terminals on plastic switches.
A two way switch can also be used in in place of a one way switch, in this instance the red wire is connected to the common (C) terminal and the black wire is connected to the (L1) terminal. The (L2) terminal is unused.
A metal light switch must be earthed as seen below.
fig 5
If you are using metal light switches (fig 5) make sure you connect the earth wire to the earth terminal on the switch and fit an earth link wire from the switch to the earth terminal in the back box.