Hope you can help, I have just fitted a new wall switch, 2 way, 1 switches on the downstairs light and the other switches on the upstairs light (2 way)
I wired the new switch exactly the same way as the old one, alas when I switch the breaker back on it blew the fuse and the upstairs lights blew. I re-fitted the old switch and it works fine. What am I doing wrong?