Hi Freelancer. i used over 50 atlas under the table switches. My power supply was the AC of a 2400 throttle pack. Nothing fancy. My switch wiring ran all into one board. i had a few problems with individual switches, usually the track was fastened a little too tight on the cork road bed. Sometimes a little ballist would get caught in the slider bar opening. Never had an electrical problem unless i wired the switch wrong. That happened sometimes. if the switch machine is not set just right under the table u can have a problem with the throw. i used a 1/2" x 1/4" hole most of the time. Electrical power shouldn't be a problem mostly the switch machines are the problem and how they are fastened. Hope u solve it and let us know what the problem was.