Previously I have written about how we go about doing the electrical layout for multiple light points using individual switches to control each light separately. However there are many instances where we want the convenience of switching on all the lights in certain part of our premises all at once. This is especially so when we are using down lights or flush-lights in our dining hall or living room. Most of the time we have at least 4 lights switched on together. This can be achieved by using one single gang switch for multiple lights.
In cases like these we can lay the wires accordingly to have one single gang switch to control all the lights. Refer to the diagram above. If you have noticed, all my diagrams here are very crude and nothing you will see in professional schematic drawings. The main aim is to show you how exactly it is done and even novices or housewives will be able understand, which is the main aim of this site.
Referring to the diagram, you will see that the first light point is like any normal light point, with the live wire (L) from the Mains going down to the switch and the switch wire (S) going up to the lights. In case you have not been following this blog, check out my previous post about lighting points.
Now to have multiple lights lighting up with only a single one gang switch, all you have to do is to keep looping the wires from the first light (L1) During termination of the lights, the red wires are twisted together. So are the black neutral wires. Doing it this way, L2 will get the electricity supply from L1, L3 will get it’s supply from L2 and so on until you come to the last light.
I will have to remind you that it is NOT advisable to loop too many lights together as it might overload the circuit. As a safety precaution, the maximum lights allowed is 10. which I think will be more than enough. Of course if you want more lights, you will have to increase the size of the wires and install a higher amperage setting for the circuit breaker, but that would be the job of a professional who knows how to calculate power consumption. It is something I will discuss later on.