Need help with light fixture transformer wiring distance

[leepearlman]

I have a low voltage light fixture with a 12-volt transformer at the top of the fixture where it mounts to the ceiling. I would like to move the transformer to the closet where the source of the wiring for the fixture and my fuse panel reside. I am wondering if the distance is too great for the low voltage current to travel. The wiring from the fuse panel to the fixture is 45 feet long and is 12 gauge romex. Plus there are wires that are part of the fixture that go from the ceiling down to the bulbs which add a few more feet. They are probably 14-gauge. There are 16 20-watt bulbs in the fixture. The transformer has a label on it as seen in the photos below.

So, my main question is, will it work if I move the transformer that far away? I want to move the transformer because it buzzes when you dim the lights. I'm not sure if you're supposed to dim it or not. Any idea how to know this? If it's not dimmable, is there a dimmable transformer I can buy that will work in this situation?

[PLAIN]http://libertypromotions.com/photo.jpg
[PLAIN]http://libertypromotions.com/photo2.jpg

Thanks

 

[anorlunda]

Use the formulas and tables on this source
https://www.westmarine.com/WestAdvisor/Marine-Wire-Size-And-Ampacity