Thanks for the help guys.
My system is "Daisy Chained" so I dont know if that technically qualifies as a splice. Nice and easy, just two 100 foot sections tied together. The wire is #12. I would describe it as two multistranded braids wrapped individually by the plastic/rubber coating though together as one, like the picture.
The transformer has terminals "A","B" and "C". Apparently "C" is only for a photo cell? This is the piece seen here.
You guys totally lost me on the math/conversion nonsense, but Ill try to get out there with my meter and check it out.