Hi all hope someone can help with this problem, I am drylining my hallway and had to put new back boxes on all switches and sockets. In the hall I have a 3 gang light switch which supplies power to the hall lights, the landing light which is the only two way light on the switch and the outside light. on replacing the switch i kept fusing the lighting rcd i am wondering what i have done wrong. The wiring is as follows, there are pieces of wire linking all three commons with the live on the middle one, i have two red wires which obviously supply power to the hall and landing lights which are connected to L1 on switches 1 and 2, i also have a black wire which is connected to L2 on switch 1, also on switch one there is another red wire which i can only assume is a live feed upstairs as our lighting is on one ring main switch 2 has the live connected to the common as already mentioned and a red wire in L1. switch three has a black wire connected to L1 and the linking wire in the common. the problem i have is two fold the first being the switch is working in reverse where when all switches are in the off position they are on and vice versa also the two way switching is not working on the landing lights, you can switch them on downstairs and they come on, you can then switch them off upstairs, so far so good but if you then try to switch them on downstairs they do not work unless you flick the switch upstairs. Any help would be greatly appreciated. Regards Owen