Reply to "Connecting 12 gauge stranded wire to fastrack .. How do you do it ?"

Mike, you're ignoring the most basic problem with smaller wire for low voltage power transmission!  Here's a computation for 100 feet (200 feet total wire length), you lose almost half the voltage in the run!  It's not the maximum ampacity that's the issue here.  For layouts, the voltage drop usually creates the major issue first.