My shed is wired for electricity. Mains comes in via a 40A consumer board with 6A and 16A MCB's. I use the 6A for lighting and the 16A for sockets. (I keep a wall chart of all possible power usage and never exceed 10 amps in total). I currently have a fluorescent light (72 watts) hard wired (i.e. no switches) to the 6A MCB. I want to add a switch to this and another switch to run an external PIR (500 watts) both supplied from the 6A MCB. Can someone please supply a diagram as I am currently baffled as to how to do it? Thanks.