There is not one reason that you couldn't. I used 14\2 and it's intended purpose is to be buried anyway. To attach to rail I cut wire and soldered into ring terminals and attached to rail clamps. You can't go wrong.
good day
That should work out very nicely.
Mark
M. Gilger - President and Chief Engineer MM&G web
Web Site: http://mmg-garden-rr.webs.com/
Sp1d3yIm having trouble with the wiring. Can i use 12/2 low voltage outdoor landscape wire for power to my track?
Absolutly. I went so far as to use the power taps for lights to put electrons on the rails. 6 years and no problems yet. I use 7 conductor sprinkler control valve wiring to power turnouts and "controlled sidings."
Tom Trigg
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