Power Supply for Amp

[Evening Shade]

I'm planning on adding a 3rd amp to my boat to send adequate power to my tower speakers. The power supply to the 2 amps that are currently in the boat are routed through 60amp breakers in the breaker panel in the left rear compartment. My question is: Should I add another 60amp breaker to the breaker panel and run a power supply wire from this to the amp or should I just run a power supply cable straight from the battery to the amp with an inline fuse? The current power supply cables appear to be fairly small gauge like about 8 or 10 gauge. I was thinking that a 0 or 2 gauge power supply cable from the breaker panel would be better, but I'm not sure the best way to wire such a large gauge wire into the breaker panel.
I would like to keep it looking stock or "factory" installed, but it would be a lot easier to run a cable straight from the battery. Just looking for some ideas how to best accomplish this task.

Thanks in advance.

[Tallredrider]

You need a fuse of some sort on your power wire. How you do that is up to you ,whether you like the clean look of another breaker, or just an inline fuse.

60 amp might not be a big enough fuse for your tower amp, depending on what you are running. A good rule of thumb is to add up the small fuses on the amp (almost all of them have them), and make your power wire fuse equal to that much. My arc audio 600.2 has 4 X 30, so you could put a 120 amp fuse on it. I put a 100 amp fuse on it and that has been fine. Better underfused than over, or else it could start a fire.

Cable size is also dependent on the amount of power you want to run, and the distance it has to go.
I love this website: www.bcae1.com
There is a calculator there you can use which is helpful.