Layout Control Panel
Here's a view of my layout control panel depicting four main Lionel toy train transformers. A big 275-watt ZW controls power to the first level O31 main line, O27 yard, all switches and some accessories. The 125-watt LW on the far right powers the trolley line on the first level. A 175-watt TW controls the first level O27 track loop. Finally, the 90-watt MPC-era 4090 is used for the second level track and a few accessories. A variety of accessories are activated by knife switches.