To answer your question about "Enought voltage" The answer is yes
Likely the wire is the proper size for the 9160 That is (60 amps) is the number that sets the wire size.
WITH the Wiz you have basically two voltages out of the 9160
14.6 is used for both BULK and Absorption as I recall. Now if the run is long you may not hit the full Sixty amps in BULK mode.. but that's not what tops off the batteries.. Absorption you are only pushing a few amps to the batteries so the voltage loss in even a 50 foot line will be small.
But the BULK charge time may be increased.
Page 3: Trojan recommends a longer, slower, bulk charge in any case
