As my layout grows, I am contemplating what to use for accessory power. I define "accessory power" as mostly layout lighting and accessories that do not rely on the main transformer "common" or U terminal as it is referred to on O gauge 3 rail layouts. Typically 12-14 volts, fixed load. I'm drawing only about 3 amps now, but would like to have 5-10 amp capability. While the ZW that I use as a main transformer has 4 outputs, I would like to farm out my accessory power to another source. Here is what I am considering: 1) A separate transformer, using either the fixed or variable outputs. 2) A switching 12 VDC power supply which can now be gotten for about $25 and supplies 20 amps or more. 3)multiple smaller AC or DC supplies. In addition to 12-14v power, would also contemplate 5VDC power distribution for LED devices.
I would like to get some ideas of what folks are using. Also looking for a good way to fuse multiple branches off a single high current (AC or DC) supply.