amps

With today's power hungry electronics, what gauge wire should be bringing power to the helm? I have a 2008 282 Sailfish, which has a 12 AWG main cable bringing power to the helm from the battery switch. I'm getting the feeling that its not enough, I estimate I am using at least 16 amps with...

New to GWs, bought preowned '09 Express 330, and just installed new FP 5000 generator. After starting generator, power panel display shows "123" which is volts (I think)?? I can't find a manual for power panel operation so hoping to learn how to track AC systems amp usage to manage generator...