What is standard gauge wire for installing fixed VHF radio Jan 24, 2011Going to rewire my fixed VHF radio this weekend - boat is about 16 years old and the wiring is corroded and pitted. Radio still works but it definitely needs to be rewired. Is there a standard wire gauge size used for fixed VHF radios? Can i use 12awg speaker wire as power wire for mobile vhf Mar 09, 2019The speaker wire in question is 99% oxygen free copper stranded 12 gauge from monoprice. It is not CCA (copper clad aluminum). It has clear insulation. The fuses that come with the original power wire would remain. The radio pulls a maximum of 10 amps when transmitting on high setting (50watts).