Wiring Diagram Adding a Light But WHY Use 3 Core and CPC Cable Connections Explained 

Thank you for all of these videos. Really clear and informative. Also you can pronounce Yellow as you blimming wish. 😊

You should include a video to describe the connections between two 2gang, 2way switches controlling 2 lights with 3 cores. My house and hundreds of homes in my area have the same setup.

I wish you'd show 2 way switching with a twin as strappers and then double insulated singles for live and switch wire. A lot of sparks don't get it!

Using 3 core for that purpose makes perfect sense if additional light with switch needs to be attached

in my new house i have two switches in my kitchen, one is a single for the lights and the other is a double also for the same lights but with another switch on that double isn't connected and it is supposed to be for my outside pir light, the wires for them go to that double switch but they are just loose, like someone forgot to add them when they renovated and changed to metal plates do you know how i could wire the outside light up? there is two wires going into each of the l1 and l2 and 1 wire into the common on one switch and the other is empty

From the previous videos diagram did you miss off the blue identifying sleeving from your picture? switching line to outside light and switching line from 1 gang to upstairs