Just wondering why 16 awg would be better then 12 awg. As the awg increases the thickness decreases. 12awg is 3.2sqmm whereas 16awg is 1.3sqmm.
Belden 8477 12 AWG has a resistance of 1.8 Ohm/1000ft whereas Belden 8471 16 awg has a resistance of 4.49 Ohm/1000ft. Even the cost of Belden 8477 12 AWG is much higher then Belden 8471