Hi, i've only just joinged the forum and am working on my first project, a multiple 9v power supply for guitar pedals which I own and plan to construct in the near future. I'm pretty new to this, but have picked up the basics and it works! the only problem is that the transformer is getting really hot really quick. This is the transformer I am using: http://www.maplin.co.uk/miniature-250ma-transformers-3688 Its 240v to 12v and has two black wires on the primary, two red and one white on the secondary (12-0-12). I have the black wires upto the mains, one live and one neutral, and the reds wired to the circuit (one live, one to ground) and the white to a ground on the casing (metal). So have I wired it wrong? Do transformers usually get too hot to pick up or touch for a few seconds? Is their any way to cool it? My main concern is that its going to cause a fire, obviously, but could also damage the circuit components or even the guitar pedals. Thanks in advance for any advice.